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Companies - O

Companies starting with O.

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911 providers

O'Reilly Automotive screenshot
O'Reilly Automotive

O'Reilly Automotive is a Fortune 500 specialty retailer of automotive aftermarket parts, tools, supplies, equipment, and accessories serving both do-it-yours...

O-RAN screenshot
O-RAN

O-RAN supports the Open Radio Access Network architecture under the Linux Foundation for more interoperable and virtualized mobile network infrastructure. It...

o1 Labs

o1 Labs (o1Labs) is a zero-knowledge cryptography company and the incubator of Mina Protocol, a lightweight blockchain that stays a constant ~22KB using recu...

O11

O11 is a Y Combinator (Winter 2026) startup building custom AI software

O1labs

o1Labs is a blockchain and cryptography company catalyzing a new generation of applications

Oak

Oak is an AI-native identity operating system that governs human, machine, and AI-agent identities from a single platform. Its Identity Intelligence Layer un...

Oak Ridge National Laboratory screenshot
Oak Ridge National Laboratory

Oak Ridge National Laboratory (ORNL) is the largest US Department of Energy science and energy laboratory. ORNL provides public data and scientific computing...

OakNorth

'OakNorth is a UK-based commercial bank and business-lending institution

Oaktree Capital Group screenshot
Oaktree Capital Group

Oaktree Capital Group is a global asset management firm specializing in alternative investment strategies including credit, private equity, real assets, and ...

OANDA screenshot
OANDA

OANDA is a forex and CFD trading broker offering REST APIs for live and practice trading. The v20 REST API provides access to real-time forex rates, order ma...

OAO RBC Information Systems (MICEX:RBCI)

OAO RBC Information Systems (MICEX:RBCI) is a company surfaced as a portfolio company of

Oapi-Codegen screenshot
Oapi-Codegen

oapi-codegen is an open source Go code generator that produces client and server boilerplate from OpenAPI 3.0 and 3.1 specifications with support for Echo, C...

Oasdiff screenshot
Oasdiff

Oasdiff is an open-source tool for detecting breaking changes and generating changelogs from OpenAPI specifications.

Oasis

Oasis Security is a Non-Human Identity (NHI) management and security platform for hybrid and multi-cloud environments. Its Agentic Access Management (AAM) of...

Oasis Health Partners

'Oasis Health Partners is a company surfaced as a portfolio company of gv and added to the

Oasis Labs

Oasis Labs builds privacy-preserving data and compute technologies. Its developer platform, Parcel, is a data-governance API for uploading, tokenizing, and c...

Oasis Petroleum screenshot
Oasis Petroleum

Oasis Petroleum was an independent exploration and production (E&P) company focused on unconventional crude oil and natural gas resources in the Williston Ba...

Oasis Security

Oasis Security is an enterprise Non-Human Identity Management (NHIM) and agentic access management platform that discovers, governs, and secures non-human id...

Oatfi

OatFi is a fintech infrastructure company that describes itself as "The Modern Credit Network for B2B Payments." It provides embedded credit, lending, and wo...

OAuth screenshot
OAuth

OAuth is an open authorization framework that enables third-party applications to access user resources without exposing credentials. It provides a secure, t...

Oauth2-Proxy screenshot
Oauth2-Proxy

oauth2-proxy is an open-source reverse proxy that provides authentication with Google, Azure, OpenID Connect, and many more identity providers.

OB1

OB1 was the venture-backed company that built and stewarded OpenBazaar, a fully decentralized, peer-to-peer marketplace protocol for buying and selling goods...

Obie

Obie is a company surfaced as a portfolio company of 500 Global and Battery

Object-Oriented Programming

Object-Oriented Programming (OOP) is a software development paradigm that organizes software design around data, or objects, rather than functions and logic....

ObjectBox

ObjectBox is a high-performance, low-footprint, offline-first on-device database with built-in data synchronization and on-device vector search, designed for...

ObjectCut screenshot
ObjectCut

"Image Background removal"

Oblenio Bio

'Oblenio Bio is a clinical-stage biotechnology company developing tri-specific

Obligate

Obligate (formerly FQX) is a Swiss digital-securities infrastructure provider for regulated on-chain debt capital markets. Its AssetOS platform lets companie...

Oblix Inc.

Oblix Inc. is a company surfaced as a portfolio company of 500-global and added to the API

Oboe

Oboe is an AI-powered learning platform whose mission is to teach one billion people one trillion things. Positioned as "AI that won't make you stupid," it l...

Obol

Obol builds distributed validator infrastructure for Ethereum, letting a validator be run across multiple independent operators and machines (a Distributed V...

Obot

Obot AI (formerly Acorn Labs) builds an open-source MCP Gateway and platform that gives organizations a central control point for Model Context Protocol (MCP...

Observable

Observable is a data-exploration, analysis, and visualization platform that helps data analysts and their cross-functional stakeholders make sense of data. I...

Observe.AI

Observe.AI is a contact center artificial intelligence platform that deploys purpose-built AI agents across voice and chat to resolve customer inquiries end-...

Observe.AI

Observe.AI is an agentic AI platform for the contact center, providing purpose-built AI agents that handle customer support end-to-end across voice and chat,...

ObserveIT (Proofpoint)

'ObserveIT was an insider threat management (ITM) vendor acquired by Proofpoint in

Observo

Observo AI built an AI-native data pipeline (telemetry pipeline) platform that optimizes

Observo Ai

Observo AI was an AI-powered data pipeline platform for observability and security telemetry. Its product reduced log and event volume (filtering low-value d...

Obsidian screenshot
Obsidian

Obsidian is a local-first knowledge base and note-taking app built on plain Markdown files. Obsidian itself does

Obsidian Security screenshot
Obsidian Security

Obsidian Security is a SaaS security platform providing threat detection, posture management, and compliance monitoring for cloud applications.

Obsidian Therapeutics

'Obsidian Therapeutics is a clinical-stage biotechnology company developing

Obvio

'Obvio is an AI-powered traffic-safety platform that helps cities and police departments

Obvious Ventures

Obvious Ventures is a San Francisco-based early-stage venture capital firm founded in 2014 by Ev Williams, James Joaquin, and Vishal Vasishth, investing in e...

Occamnetworks

'Occam Networks was a broadband access equipment vendor that developed and marketed

Occidental Petroleum screenshot
Occidental Petroleum

Occidental Petroleum is an international oil and gas exploration and production company with operations in the United States, Middle East, Africa, and Latin ...

Occipital

Occipital is a computer-vision and 3D-scanning company known for the Structure Sensor depth camera and the Canvas home-scanning app, built on more than fifte...

Occupational Safety and Health Administration screenshot
Occupational Safety and Health Administration

The Occupational Safety and Health Administration (OSHA) is a US federal agency that sets and enforces standards for safe and healthful working conditions. O...

Ocean Facts

"Facts pertaining to the physical science of Oceanography"

Ocean Network Express screenshot
Ocean Network Express

Ocean Network Express (ONE) is a Singapore-headquartered global container liner shipping company formed in 2017 through the integration of the container ship...

Ocean Security

Ocean Security (Ocean) is an AI-native, agentic email security platform that stops targeted, AI-powered email attacks that surface-level detection tools miss...

Ocean.io screenshot
Ocean.io

Ocean.io is a B2B account-based prospecting and enrichment platform focused on lookalike search and ICP refinement. It offers a REST API for company enrichme...

Oceaneering International screenshot
Oceaneering International

Oceaneering International is a global provider of engineered services and products primarily to the offshore oil and gas industry, with a focus on deepwater ...

Oceans

Oceans Healthcare is a behavioral health system operating a network of psychiatric hospitals and outpatient programs across the southern United States. Found...

oceg

oceg is a company surfaced as a portfolio company of qiming and added to the API Evangelist

Ocelot screenshot
Ocelot

Ocelot is an open-source API Gateway built with .NET for microservices architectures. It provides routing, authentication, rate limiting, load balancing, and...

OCI screenshot
OCI

OCI (Open Container Initiative) is an open governance structure for creating open industry standards around container formats and runtimes. OCI defines stand...

OCLC screenshot
OCLC

The Discovery API allows you to surface both WorldCat and WorldCat Discovery central index data in search results, including: Materials held by your library ...

OCRA screenshot
OCRA

OCRA (OATH Challenge-Response Algorithm) is a standard for generating one-time passwords based on challenge-response authentication as defined in RFC 6287. I...

Ocrolus

'Ocrolus is a fintech document-automation and analytics platform that helps lenders analyze

Octa

Octa is a company surfaced as a portfolio company of 500-global and added to the API Evangelist

Octane screenshot
Octane

Usage-based pricing and monetization platform with a REST API for managing

Octane AI

Octane AI is an AI-powered quiz and product-recommendation platform for Shopify merchants, turning storefront browsers into buyers with no-code personalized ...

Octant

Octant is a precision medicine company developing next-generation small molecule therapeutics by merging biology, chemistry, and computation to engineer drug...

Octant Bio

Octant (Octant Bio) is a precision-medicine and therapeutics company based in Emeryville, California, founded by Sri Kosuri and Ramsey Homsany. Octant engine...

Octapulse

Octapulse (OctaPulse) is a Y Combinator (Winter 2026) startup applying computer vision and robotics to automate quality inspection in finfish farms. Its AI v...

Octarine

'Octarine was a cloud-native application security startup that built a

Octarine Labs

Octarine Labs is a company surfaced as a portfolio company of battery-ventures and added

Octav

Octav is a cryptocurrency portfolio intelligence platform that provides real-time, multi-chain portfolio data, transaction history, DeFi protocol positions, ...

Octave

Octave (Octave Online Therapy) is a modern behavioral and mental health company providing personalized, evidence-based therapy — individual, couples, and fam...

Octavewealth

Octave Wealth (octavewealth.com) is a Y Combinator-backed company that, based on its name and branding, operates in the wealth and personal-finance space. It...

OctoAI screenshot
OctoAI

OctoAI (formerly OctoML) was a Seattle-based AI inference platform founded in 2019 as a University of Washington Allen School spin-out of the Apache TVM proj...

Octobat

Octobat is a billing, invoicing, and tax-compliance platform for online

Octoparse screenshot
Octoparse

Octoparse is a powerful web scraping tool that allows users to extract data from websites without any coding knowledge. The platform uses advanced algorithms...

Octopart

"Electronic part data for manufacturing, design, and sourcing"

Octopus Deploy screenshot
Octopus Deploy

Octopus Deploy is a continuous delivery and release orchestration platform for managing deployments across development, test, and production environments to ...

Octopus Energy screenshot
Octopus Energy

Octopus Energy is a UK-founded retail energy supplier and the parent of Kraken Technologies, the AI-powered energy operating system that runs both Octopus an...

OCUDU Ecosystem Foundation screenshot
OCUDU Ecosystem Foundation

The OCUDU Ecosystem Foundation is a Linux Foundation project announced at MWC Barcelona in March 2026. It is an open collaboration hub dedicated to building ...

Oculus

Oculus is the virtual-reality company founded in 2012 that Kickstarter-launched the Rift headset and was backed by Spark Capital, Matrix Partners and others ...

Oculus VR

'Oculus VR is the pioneering virtual reality company founded in 2012 and acquired by Facebook

Ocwen Financial

Ocwen Financial Corporation is a leading non-bank mortgage servicer and originator providing solutions through its primary brands PHH Mortgage and Liberty Re...

ODAIA

'ODAIA is a commercial intelligence platform for the pharmaceutical

Odaseva

Odaseva is an enterprise data security, backup, and governance platform purpose-built for large, complex Salesforce environments. It provides data backup and...

OData screenshot
OData

OData (Open Data Protocol) is an OASIS standard that defines best practices for building and consuming RESTful APIs. It enables the creation of query-based d...

Oddcast

Oddcast is a New York-based creative media technology company that builds speaking-character, avatar, and text-to-speech products for agencies, brands, busin...

Oddpool

Oddpool is an institutional-grade data platform for prediction markets, offering unified access to market data across Kalshi and Polymarket through a single ...

OddsJam screenshot
OddsJam

OddsJam's Sports Betting API offers real-time betting odds from 100+ sportsbooks including player props, alternate markets, injury data, schedules, rankings,...

Oddsmagnet

"Odds history from multiple UK bookmakers"

Oddup

'Oddup (now operating as Oddup Markets) is a Singapore-based platform founded in 2015 by James

Odeko

Odeko is a cafe operations platform that keeps independent coffee shops and cafes stocked by combining predictive ordering, overnight supply delivery, and mo...

Oden Technologies

Oden Technologies provides AI-powered software for manufacturing optimization, delivering real-time, AI-driven recommendations to front-line factory operator...

Odessa Technologies screenshot
Odessa Technologies

Odessa is a Philadelphia-headquartered lease and loan management software company founded in 1998 that powers asset finance for banks, captive finance compan...

Odoo screenshot
Odoo

Odoo is an open-source suite of business applications covering ERP, CRM, eCommerce, accounting, inventory, and more. Odoo provides external APIs for integrat...

Odos screenshot
Odos

Odos is a DEX aggregator and smart order routing platform that uses a sophisticated optimization algorithm to unify fragmented liquidity and maximize the out...

ODP screenshot
ODP

'Profile for ODP in the API Evangelist network. Fortune F500 (rank 446).'

ODWeather screenshot
ODWeather

"Weather and weather webcams"

Odyssey

Odyssey is an AI research lab pioneering general-purpose world models — causal, multimodal systems that learn to understand and simulate the world beyond lan...

Odyssey Ai

Odyssey is an AI research lab building general-purpose world models — causal, multimodal systems that understand and simulate physical environments, generati...

Odyssey Interactive

Odyssey Interactive is an independent game development studio focused on building free-to-play, cross-platform, competitive titles set in bright, hopeful, an...

Odyssey Therapeutics

Odyssey Therapeutics is a clinical-stage biopharmaceutical company developing small-molecule

OECD

The OECD provides programmatic access to OECD data through an application programming interface (API) based on the SDMX standard. These APIs are free of char...

OEN

'Oen (應援科技) is a Taiwan-based fintech company operating an integrated

Ofbusiness

'OfBusiness is one of India''s largest B2B raw-materials procurement and

Oferteo

Oferteo (oferteo.pl) is a Polish online services marketplace that connects people and businesses seeking services (Zlecający) with local contractors and serv...

OFF

'OFF (Off-Live, off.live) is an enterprise AI software company building intelligent

Offcall

Offcall is a career and practice platform for physicians, backed by Bloomberg Beta. It

Offchain

Offchain (formerly Offchain Labs) is a blockchain infrastructure company that builds and maintains core technology for the Ethereum ecosystem. It is the crea...

Offchain Labs

Offchain Labs (now operating as "Offchain") is the research-and-engineering company behind Arbitrum, one of the leading Ethereum Layer 2 scaling ecosystems, ...

Offchain Labs (Arbitrum)

Offchain Labs is the team behind Arbitrum, a suite of Ethereum Layer 2 scaling technologies (Arbitrum One and Arbitrum Nova) built on the Nitro tech stack an...

OffenderList screenshot
OffenderList

OffenderList is a comprehensive online platform that provides information about individuals who have been convicted of criminal offenses. The website allows ...

Offenders.io screenshot
Offenders.io

Offenders.io is a technology company that specializes in providing innovative solutions for managing and monitoring offender populations. Their platform util...

Offerfit

OfferFit is an AI decisioning company whose reinforcement-learning platform automated marketing experimentation and 1:1 personalization (replacing manual A/B...

OfferUp

OfferUp is a mobile-first local marketplace where people buy and sell items in their community across categories including electronics, vehicles, furniture, ...

Office 365 screenshot
Office 365

Microsoft Office 365 is a cloud-based suite of productivity and collaboration applications that integrates all Microsoft's existing online applications into ...

Office Depot screenshot
Office Depot

Office Depot is a leading provider of business products and services delivering workplace solutions through retail stores, e-commerce sites, and a dedicated ...

Office Luv

OfficeLuv is office management and purchasing software that centralizes all of a workplace's ordering into a single platform. It aggregates dozens of vendors...

Office of Career, Technical, and Adult Education

The Office of Career, Technical, and Adult Education is a government agency that focuses on providing resources and support to individuals seeking to further...

Office of Child Support Services screenshot
Office of Child Support Services

The Office of Child Support Services is a government agency that works to ensure that children receive the financial support they need from their non-custodi...

Office of Community Oriented Policing Services screenshot
Office of Community Oriented Policing Services

The Office of Community Oriented Policing Services (COPS Office) is a component of the U.S. Department of Justice that works to advance the practice of commu...

Office of Congressional Workplace Rights screenshot
Office of Congressional Workplace Rights

The Office of Congressional Workplace Rights is responsible for enforcing workplace rights for employees of the United States Congress. This includes oversee...

Office of Fossil Energy and Carbon Management screenshot
Office of Fossil Energy and Carbon Management

The Office of Fossil Energy and Carbon Management is a division of the U.S. Department of Energy that is focused on addressing the challenges of reducing gre...

Office of Government Ethics screenshot
Office of Government Ethics

The Office of Government Ethics (OGE) is an independent agency within the federal government that oversees the behavior and ethics of executive branch employ...

Office of Inspector General screenshot
Office of Inspector General

The Office of Inspector General (OIG) conducts audits, investigations, inspections, and other reviews to promote economy and efficiency in government program...

Office of the Comptroller of the Currency screenshot
Office of the Comptroller of the Currency

The Office of the Comptroller of the Currency (OCC) is a federal agency responsible for regulating and supervising national banks and federal savings associa...

Office of the Comptroller of the Currency (OCC) screenshot
Office of the Comptroller of the Currency (OCC)

The Office of the Comptroller of the Currency (OCC) charters, regulates,

Office of the Federal Register screenshot
Office of the Federal Register

The Office of the Federal Register is responsible for publishing official government documents. This includes the publication of presidential proclamations, ...

Officebanao

Officebanao is a technology-enabled office interior design and build company headquartered in Gurugram and Bengaluru, India, and founded in 2021. It delivers...

Official Ukrainian Government Portal screenshot
Official Ukrainian Government Portal

Official Ukrainian Government Portal is a open data portal open-data portal for Ukraine running CKAN. It exposes the CKAN catalog API, a standardized machine...

Offr

Offr (Offr.io Ltd) is a Dublin-based property technology (proptech) platform that digitizes end-to-end real estate transactions. Estate and letting agents em...

OFI

OFI is a company surfaced as a portfolio company of 500-global and added to the API Evangelist

OFX (OzForex)

'OFX (formerly OzForex) is a global money-transfer and international-payments

OGE Energy

OGE Energy is the parent company of Oklahoma Gas and Electric Company, a regulated electric utility serving customers in Oklahoma and western Arkansas.

Ogen screenshot
Ogen

Ogen is a high-performance Go code generator that produces type-safe HTTP clients and servers from OpenAPI v3 specifications with validation, middleware, and...

Ogilvy

Ogilvy is a global advertising, marketing, and communications agency network founded by David Ogilvy in 1948 and headquartered in New York City. It is a WPP ...

OGSystems

OGSystems was a geospatial intelligence, data analytics, and advanced

Ohalo

Ohalo is a data governance company whose Data X-Ray platform discovers, classifies,

Ohio National (Acquired by Constellation Insurance / Rebranded as AuguStar) screenshot
Ohio National (Acquired by Constellation Insurance / Rebranded as AuguStar)

Ohio National Financial Services was a Cincinnati-based mutual life insurance and annuities provider, historically operating through Ohio National Mutual Hol...

Ohio State University screenshot
Ohio State University

Ohio State University is a large public land-grant research university in Columbus, Ohio, United States, ranked #208 in the QS World University Rankings 2025...

Ohloh

Ohloh is the open source directory and analytics service that was rebranded as Black Duck Open Hub (openhub.net) after Black Duck Software acquired it. It tr...

Ohmconnect

OhmConnect is a residential demand-response and virtual power plant company that turns household electricity flexibility into grid capacity. It alerts custom...

OHMYSYNT

OHMYSYNT is a company surfaced as a portfolio company of 500-global and added to the API

OHouse

'OHouse is a company surfaced as a portfolio company of bond-capital and added to the API

OIDC screenshot
OIDC

OpenID Connect (OIDC) is an identity layer built on top of OAuth 2.0 that enables clients to verify the identity of end-users based on authentication perform...

Oikolab screenshot
Oikolab

"70+ years of global, hourly historical and forecast weather data from NOAA and ECMWF"

Oil States International

Oil States International is a global oilfield services company that provides specialty products and services to oil and gas drilling and production companies...

OK Play

OK Play is a company surfaced as a portfolio company of 500-global and added to the API Evangelist

Okcredit

OkCredit is a mobile digital ledger (bahi khata) application for small business owners and merchants across India, letting shopkeepers record credit and paym...

Okendo

Okendo is a customer-marketing platform for ecommerce brands, centered on the Shopify ecosystem, that unifies product reviews and ratings, loyalty programs, ...

Okera

'Okera was a data access governance and data security platform providing fine-grained,

OKEx

"Cryptocurrency exchange based in Seychelles"

OkHttp screenshot
OkHttp

OkHttp is an efficient HTTP and HTTP/2 client for Android and Java applications with connection pooling and transparent GZIP.

Oklahoma screenshot
Oklahoma

Oklahoma is a open data portal open-data portal for United States running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface ov...

Oklo

Oklo Inc. is a Santa Clara, California advanced fission company designing and deploying small modular reactors under the Aurora powerhouse brand. The Aurora ...

Okol

Okol operates propiedades.com, an online real estate marketplace serving

Okra

Okra was an open finance / open banking infrastructure company for Africa, headquartered in Lagos, Nigeria. Its REST APIs let businesses link end users' bank...

Okra

Okra was an African open-finance / open-banking infrastructure company

Okta

Okta is the workforce identity incumbent — its Identity Cloud platform (also called the Okta Workforce

OKX screenshot
OKX

Global cryptocurrency exchange providing a comprehensive REST and WebSocket

Ola

Ola is India's leading ride-sharing and mobility platform operating across 100+ cities in India and international markets. Its developer ecosystem includes p...

Ola Electric

'Ola Electric is an Indian electric-vehicle manufacturer building electric scooters (the S1

Olark screenshot
Olark

Olark is a live chat and AI-powered customer communication platform that

Old Dominion Freight Line screenshot
Old Dominion Freight Line

Old Dominion Freight Line is a leading less-than-truckload (LTL) motor carrier providing regional, inter-regional, and national freight services in the Unite...

Old National Bancorp

Old National Bancorp is a regional bank holding company headquartered in Indiana and a Fortune 1000 firm that provides consumer banking, commercial banking, ...

Old National Bank

Old National Bank is a nationally chartered, FDIC-insured regional commercial bank and the primary subsidiary of Old National Bancorp (NASDAQ: ONB), headquar...

Old Republic International screenshot
Old Republic International

Old Republic International is one of the nation's largest publicly held insurance organizations, providing general insurance, title insurance, and life and a...

Old Town Media

Old Town Media is a New York City media consulting and investment firm founded in 2017 by

Olea

'Olea is a company surfaced as a portfolio company of insight-partners and added to the API

Olema

Olema Oncology is a clinical-stage biopharmaceutical company headquartered in San Francisco with operations in Cambridge, Massachusetts, focused on developin...

Olev

Olev is a company surfaced as a portfolio company of 500-global and added to the API Evangelist

Oligo

Oligo Security is a runtime security platform built for the AI era, giving security teams real-time visibility and protection across applications, cloud infr...

Olin screenshot
Olin

Olin Corporation is a leading global manufacturer and distributor of chemical products and ammunition. Olin operates three business segments: Chlor Alkali Pr...

Olist

Olist is a Brazilian commerce technology company headquartered in Curitiba, Paraná, offering an integrated ecosystem of solutions that automate business mana...

Olive AI screenshot
Olive AI

Olive AI was a Columbus, Ohio healthcare automation company founded in 2012 by Sean Lane (originally as CrossChx, rebranded to Olive in 2017). The company bu...

Olive Technologies

Olive is an AI-native vendor evaluation and technology procurement platform that runs the full RFP lifecycle in a single workspace — from requirements manage...

Olix

'Olix (OLIX Computing) is a stealth-stage hardware company building a new computing

Ollama screenshot
Ollama

API for running large language models locally.

Olli Health

Olli Health is an AI-powered managed service for home health agencies that automates medical coding and OASIS (clinical assessment) and Plan of Care quality ...

Ollie

Ollie (ollie.com, formerly myollie.com) is a direct-to-consumer pet health company that makes fresh, human-grade dog food tailored to each dog. Customers bui...

Ollin Bio

Ollin Bio is a privately held biotechnology company developing novel therapeutics, organizing its work around defined therapeutic areas and a product pipelin...

Olly

'Olly is a company surfaced as a portfolio company of obvious-ventures and added to the API

Olo screenshot
Olo

Olo is a leading on-demand commerce platform powering the digital experience for restaurant brands, serving approximately 750+ enterprise and emerging chains...

OLSET

OLSET is a company surfaced as a portfolio company of 500-global and added to the API Evangelist

OLX

'OLX is a global online classifieds and marketplace operator, part of OLX Group (owned by

OLX Poland screenshot
OLX Poland

"Integrate with local sites by posting, managing adverts and communicating with OLX users"

OlympusDAO screenshot
OlympusDAO

OlympusDAO is a decentralized reserve currency protocol built on Ethereum that pioneered protocol-owned liquidity (POL). The Olympus protocol issues OHM, a c...

Om1

OM1 is an AI-powered healthcare analytics and real-world data company that generates real-world evidence from clinical, EMR, and claims data. Its PhenOM foun...

Omada Health

Omada Health is a virtual-first healthcare company founded in 2011 and headquartered in San Francisco that delivers integrated, evidence-based care programs ...

Omada Health

'Omada Health is a virtual-care company that delivers personalized, evidence-based

OMass Therapeutics

'OMass Therapeutics is an Oxford, UK biotechnology company developing

Omate

Omate designs and manufactures Wearable-as-a-Service (WaaS) safety solutions built around cellular-connected smartwatches for people who need protection — se...

OMDb screenshot
OMDb

Open Movie Database REST API providing movie and TV show metadata, ratings, poster images, and episode data from a community-maintained database. Supports lo...

Omeat

'Omeat (rebranded as Evergreen Select) is a cultivated-beef company that

Omen

'Omen (omen.ai) delivers real-time asset intelligence through continuous fluid analysis,

OMG Network

'OMG Network (formerly OmiseGO) is a Layer-2 plasma scaling solution

OMGPOP

'OMGPOP is a company surfaced as a portfolio company of bessemer-venture-partners, y-combinator

omio

Omio (formerly GoEuro) is a Berlin-based travel booking platform that lets travelers

Omise

Omise (now Opn Payments, part of Opn) is a Southeast Asian online payment

Omnea

Omnea is an AI-native procurement platform that automates the full source-to-pay (S2P) process, unifying intake management, strategic sourcing, third-party r...

Omnee

Omnee (Omnee AI) is a Techstars-backed startup providing an AI-powered customer care

Omni

Omni is an AI-powered business intelligence and embedded analytics platform that turns a governed semantic model into a trusted source of truth for people an...

Omni Analytics

Omni is a business intelligence and embedded analytics platform that turns raw warehouse data into trusted insights. It combines a central semantic layer wit...

Omni Creator Products

Omni Creator Products (OCP) is a game development platform company founded in 2021 and based in Raleigh, North Carolina, operating fully remote. Its mission ...

Omni Network

Omni Network is a crypto interoperability protocol that makes the entire multi-chain ecosystem feel like a single chain for users and developers. Its core pr...

Omniata

'Omniata is a company surfaced as a portfolio company of creandum and added to the API Evangelist

Omnicare screenshot
Omnicare

Omnicare is a long-term care pharmacy services company providing pharmacy services to long-term care facilities, senior living communities, and other healthc...

Omnicom Group screenshot
Omnicom Group

Omnicom Group is a global advertising, marketing, and corporate communications holding company with hundreds of agencies serving clients in more than 100 cou...

Omnicom Group screenshot
Omnicom Group

'Fortune 1000 company Omnicom Group. Public API documentation has not yet been catalogued in the API Evangelist network.'

Omnidock

'Omnidock is a merchant-of-record platform that streamlines multi-marketplace

Omnifold

Omnifold is an AI supply chain planning platform for physical product companies — CPGs, manufacturers, distributors, and retailers. The company trains a cust...

Omniful, Inc.

Omniful is an AI-powered unified supply chain and fulfillment platform that consolidates order management (OMS), warehouse management (WMS), transportation m...

OmniML

'OmniML is a company surfaced as a portfolio company of matrix-partners and added to the

Omniome

Omniome was a San Diego genomics company that developed Sequencing By Binding

Omniscient

Omniscient is an AI intelligence platform for organizational decision-making, describing

Omnisend screenshot
Omnisend

Omnisend is a Lithuanian-headquartered email and SMS marketing automation platform purpose-built for ecommerce, with first-class integrations into Shopify, B...

Omnitracs

Omnitracs is a commercial fleet management, telematics, and

Omnitron Sensors

Omnitron Sensors designs advanced MEMS (micro electro mechanical systems)

Omniture

Omniture was a web analytics company founded in 1996 in Orem, Utah and

Omnius

omni:us (operated by Qidenus Group GmbH, Berlin) is an insurance technology company building agentic AI for claims processing. Its platform automates end-to-...

omniX labs

omniX labs is a New York-based AI machine-vision analytics company (owned by EverWash)

OMsignal

'OMsignal was a Montreal-based biometric smart-apparel startup, backed by Bessemer

Omvana

Omvana was a meditation and personal-growth audio app developed by Mindvalley, offering

On

'On (On Holding AG) is a Swiss performance sportswear company founded in 2010, known for

On Deck

On Deck (now operating as the On Deck Founder Fellowship, ODF) is a founder fellowship and startup community program that helps aspiring entrepreneurs start ...

On24

ON24 (NYSE: ONTF) is a digital engagement and webinar platform that companies use to run webinars, virtual events, and always-on content experiences and to t...

Onafriq screenshot
Onafriq

Onafriq (formerly MFS Africa) is a pan-African digital payments network headquartered in London with operating entities across Mauritius, Ghana, Nigeria, Tan...

Onaroll

'Onaroll is a company surfaced as a portfolio company of bessemer-venture-partners and added

Once

'Once (getonce.com) is a consumer chat and connection platform positioned as an alternative

Oncimmune

Oncimmune is a biotechnology company specializing in antibody and autoantibody biomarker discovery for precision medicine. Its proprietary ImmunoINSIGHTS pla...

Onco.com

Onco.com is a comprehensive cancer care platform operated by Apollo Hospitals Enterprise Ltd that connects cancer patients across India with oncologists and ...

Oncolinea

Oncolinea is a company surfaced as a portfolio company of canaan-partners and added to the

Oncoresponse

Oncoresponse is a company surfaced as a portfolio company of canaan-partners and added to

OnCorps AI

OnCorps AI is an agentic AI platform for fund operations at financial institutions, automating complex middle- and back-office tasks through AI agents that p...

OnDeck screenshot
OnDeck

OnDeck is a small business lending platform that provides partner APIs for submitting loan applications, checking business health scores via the OnDeck Score...

OnDeck Capital

'OnDeck Capital (ODK Capital, LLC) is one of the largest online small business

Ondemand

OnDemand AI (on-demand.io) is a RAG-powered AI Platform-as-a-Service that lets companies

ONDiGO

ONDiGO is a company surfaced as a portfolio company of 500-global and added to the API Evangelist

ONDisplay

'ONDisplay is a company surfaced as a portfolio company of matrix-partners and added to the

Ondo Finance

'Ondo Finance builds institutional-grade platforms and infrastructure to bring financial markets onchain, tokenizing real-world assets and equities. Its deve...

One

OnePay (formerly One / One Finance) is a Walmart-backed consumer fintech

One Assist

OneAssist is an Indian consumer protection and services company that provides device and appliance protection, extended warranty, and financial-fraud assista...

One Codex

One Codex is a microbial genomics data platform for fast, reproducible microbiome sequencing and analysis. Its cloud platform pairs the "world's largest micr...

One Data

'One Data is a German enterprise software company (onedata.ai, formerly onedata.de) whose

One Degree

One Degree is a California-based 501(c)(3) nonprofit technology organization that empowers low-income and underserved individuals, families, and social-servi...

One Five

One Five (styled one.five) is a sustainable packaging technology company based in Holm, Germany that pairs an AI-driven decision platform, Quartermaster, wit...

One Map, Singapore screenshot
One Map, Singapore

"Singapore Land Authority REST API services for Singapore addresses"

One Medical *

'One Medical (1Life Healthcare, Inc.) is a membership-based primary care

One Model

One Model is an HR and people-analytics software platform that unifies fragmented workforce data from HRIS, ATS, payroll, engagement, performance, and financ...

One Month

One Month is an online coding education platform that teaches beginners practical software and web development skills through short, project-based video cour...

One More Game

One More Game is a fully remote game development studio founded by veterans behind titles such as Warcraft, Diablo, StarCraft, and Guild Wars. The team build...

One Raven

'One Raven is a Phoenix, Arizona smart-home technology company building a local-first home

One Robot

One Robot is a San Francisco-based Y Combinator (Winter 2026) startup building world-model-based simulation environments for robotics teams. Its core product...

One Trading

One Trading (One Trading Exchange B.V.) is an EU-regulated cryptocurrency and derivatives exchange for retail and institutional traders, positioning itself a...

one-chip

one-chip is a company surfaced as a portfolio company of qiming and added to the API Evangelist

OneAPM

OneAPM (Beijing Blueware Technology / 北京蓝海讯通科技) is a Chinese application performance management and intelligent IT operations vendor founded in 2008. Its pro...

OneASP

OneASP (Application Security Protection) is the runtime application security

Onebrief

Onebrief is a defense-technology company building a unified command workspace for military planning, decision-making, and staff collaboration. The web-based ...

OneBusAway screenshot
OneBusAway

OneBusAway is an open-source real-time transit information platform managed by the Open Transit Software Foundation. It provides transit riders with real-tim...

Onecard

'OneCard is a mobile-first metal credit card from India''s FPL Technologies, a fintech

OneChronos

OneChronos operates AI-powered "Smart Market" alternative trading systems that match institutional orders using Nobel Prize-winning combinatorial auction tec...

Onecli

OneCLI is an open-source credential gateway and identity layer for AI agents. Agents connect to Gmail, GitHub, Slack, AWS, Jira and 50+ other services throug...

OneCommand

OneCommand is a cloud-based customer marketing and loyalty-automation platform built for

OneConnect

'OneConnect Financial Technology (NYSE: OCFT; HKEX: 6638) is a technology-as-a-service

OneDrive screenshot
OneDrive

"File Sharing and Storage"

Onefinestay

Onefinestay is a British luxury hospitality company founded in 2009 that curates and manages a portfolio of upmarket private homes, villas, apartments and ch...

Oneflow

Oneflow is a contract lifecycle management and e-signature platform that

Onefootball

'Onefootball is a Berlin-based digital football (soccer) media platform

Oneforty

Oneforty was a Twitter application marketplace and app store founded by Laura Fitton in

OneHealthCompany

The One Health Company is a Palo Alto veterinary precision-oncology company, best known for its FidoCure platform, that brings human-grade precision cancer m...

Onehouse

Onehouse is a fully managed universal data lakehouse platform, built by the original creators of Apache Hudi. It provides near real-time data ingestion (CDC ...

ONEiO screenshot
ONEiO

ONEiO is a managed integration service provider delivering IntegrationOps as a Service, providing cloud-based, automation-led integrations for enterprise IT ...

OneKey

OneKey is a self-custody crypto wallet company — "Self Custody. Open Source. Fully Onchain." It builds open-source hardware wallets (OneKey Pro, Classic 1S, ...

OneKitchen

OneKitchen is a Dubai-based cloud/ghost-kitchen enablement startup founded in 2018 that

OneLogin screenshot
OneLogin

OneLogin is an identity and access management platform providing single sign-on (SSO), multi-factor authentication, user provisioning, and a RESTful API for ...

OneMain Holdings

OneMain Holdings is a leading provider of personal installment loans to nonprime consumers in the United States, with branches across multiple states. No pub...

oneNav

'oneNav is a fabless GNSS (Global Navigation Satellite System) semiconductor

ONEOK screenshot
ONEOK

ONEOK is a Fortune 500 energy company providing midstream services to natural gas and natural gas liquids producers, processors, and customers. This reposito...

OnePay

OnePay is a Walmart-backed financial technology company that delivers mobile banking and money services through a single consumer app, with banking provided ...

Onepot

Onepot (onepot.ai) is a San Francisco-based startup building an AI-powered, fully automated custom synthesis platform for small-molecule drug discovery. It c...

Onera (acquired by Lyniate in 2021)

Onera, Inc. was a San Francisco-based retail technology company that built a real-time inventory availability and omnichannel order fulfillment platform. Its...

OneRoom

OneRoom was an online-learning startup founded in 2014 in San Francisco

Oneschema

OneSchema is an embeddable data onboarding and file-import platform for developers. Its core

OneScreen AI

OneScreen AI is a data-driven out-of-home (OOH) advertising company that makes real-world media — billboards, transit, and place-based advertising — as query...

OneShield

OneShield Software provides core insurance platform solutions for property and casualty (P&C) insurers, managing general agents (MGAs), program administrator...

OneShot

OneShot (oneshot.ai) is an autonomous outbound sales prospecting platform that uses generative AI, machine learning, and reinforcement learning to automate t...

OneSignal screenshot
OneSignal

OneSignal is a customer engagement platform with push notifications,

Onesource Services

Onesource Services is a company surfaced as a portfolio company of canaan-partners and added

OneSpot

OneSpot was an Austin, Texas adtech and content-marketing startup that built a machine-learning

OneStream

OneStream is an enterprise finance platform that unifies financial and operational data into a single source of truth, spanning financial close and consolida...

OneSwoop

OneSwoop is a UK car-buying and new-car price-comparison website, founded in 1999 and

OneTick (OneMarketData) screenshot
OneTick (OneMarketData)

OneTick, from OneMarketData, is an enterprise tick database and analytics

OneTrueFan

OneTrueFan is a company surfaced as a portfolio company of 500-global and added to the API

OneTrust screenshot
OneTrust

OneTrust is an enterprise privacy, security, ethics, and ESG platform. Its developer portal

OneUptime screenshot
OneUptime

OneUptime is an open source observability platform combining monitoring, incident management, status pages, and on-call scheduling in one OpenTelemetry-nativ...

OnFabric

OnFabric (Fabric) builds portable consumer context for the AI internet, letting people bring their full digital self into their favourite LLMs so agents beco...

OnFarm

OnFarm Systems, founded in 2012 and headquartered in Fresno, California, was an agriculture IoT data-integration company that offered a customizable dashboar...

Onfido screenshot
Onfido

Onfido is a global identity verification and authentication company that helps businesses verify the identities of their customers. Using advanced technology...

Onfleet screenshot
Onfleet

'Onfleet is an AI-powered last-mile delivery management platform that

OnFrontiers

OnFrontiers is the first and largest expert network for U.S. federal contractors, an Expertise Intelligence Platform connecting government contractors with 1...

Oni Systems

ONI Systems Inc. was an optical networking equipment company that built optical

Onit

Onit is a Kenyan digital bank operated by Onit Microfinance Bank Inc. and regulated by the Central Bank of Kenya (CBK), with deposits protected by the Kenya ...

Onkos Surgical

Onkos Surgical is a privately held surgical oncology company founded in 2015 and headquartered in Parsippany, New Jersey, focused on innovative solutions for...

Onlia

Onlia is a Canadian digital insurance brokerage, operating as the registered business name of Onlia Agency Inc. and backed by Southampton Financial Inc. (the...

OnlineNIC screenshot
OnlineNIC

OnlineNIC offers a RESTful API with JSON format response for our partners to directly manage their products and orders. We intends to help our partners autom...

OnlineTyari

OnlineTyari is one of India's largest online exam-preparation platforms, built by Next Door Learning Solutions Private Limited (Jaipur, Rajasthan) and acquir...

OnMyGrad

OnMyGrad is a Hong Kong-based campus-recruitment and career-learning SaaS platform that helps employers connect with university talent across Southeast Asia ...

Onomondo

Onomondo is a global IoT cellular-connectivity platform that connects

OnPlan

OnPlan (onplan.co) publishes guidance and content on project controls, budgeting, and forecasting for organizations managing projects and capital programs. T...

Onramp Payments

Onramp Payments, Inc. (ONRAMP) is a fintech company building modern payments infrastructure for the commercial trucking and fleet industry. Founded by logist...

onsemi screenshot
onsemi

ON Semiconductor (now branded as onsemi) is a global supplier of semiconductor-based solutions for power efficiency, image sensing, and signal processing in ...

Onshape

Onshape is a cloud-native computer-aided design (CAD) and product data management (PDM) platform, part of PTC, that runs entirely in a web browser with real-...

Onsi

Onsi is a global technology provider and UK/EU insurance intermediary that delivers flexible, shift-linked worker benefits — on-demand ("Embedded") pay, insu...

Onsitedental

'Onsite Dental is a mobile and on-site dental care provider that brings

Onsitego

'Onsitego is a Mumbai-based Indian consumer device-protection company that

OnsiteIQ

OnsiteIQ is a construction intelligence platform for real estate owners and developers that combines regular on-site 360-degree reality capture with AI-power...

OnStation

OnStation is a digital stationing platform for road and highway construction projects, replacing paper station logs and manual chaining with GPS-based field ...

OnSwipe

OnSwipe is a company surfaced as a portfolio company of techstars and added to the API Evangelist

Ontario Data Catalogue screenshot
Ontario Data Catalogue

Ontario Data Catalogue is a provincial government open-data portal for Canada running CKAN. It exposes the CKAN catalog API, a standardized machine-readable ...

Ontic

Ontic is a corporate and physical security management software company based in Austin, Texas, that unifies protective intelligence, executive protection, in...

Ontora

Ontora is an AI operational-intelligence platform that runs parallel, voice-based AI-agent interviews with every employee to map how work actually gets done ...

Ontra AI

Ontra is an AI-powered contract automation and digital execution platform for private markets. It automates routine legal and compliance workflows for invest...

Ontraport screenshot
Ontraport

Ontraport is a business automation platform combining CRM, marketing automation, email marketing, landing pages, ecommerce, and membership site capabilities ...

Ontruck

Ontruck is a Spanish road-freight technology platform that connects shippers (cargadores) with a network of professional carriers (transportistas) for full-t...

Onward Delivery

Onward Delivery is a Denver, Colorado final-mile logistics platform, backed by Techstars, that specializes in "big and bulky" deliveries by smart-matching sh...

OnWater screenshot
OnWater

"Determine if a lat/lon is on water or land"

OnXMaps

'onX Maps (onXmaps) is a Montana-based GPS mapping technology company building

Onyx Bazaar screenshot
Onyx Bazaar

"Free public leaderboard of x402 paid HTTP services indexed from Coinbase CDP discovery API"

Onze

Onze is a Brazilian fintech (São Paulo) focused on corporate private pension (previdência privada) and financial health for companies and their employees. It...

Ooak Data

Ooak Data is an applied AI research lab building the data infrastructure for frontier AI. It turns real company data into reinforcement-learning environments...

Ooda Health

'OODA Health is a healthcare technology company modernizing the business

Oolka

Oolka is a Bangalore-based consumer fintech that helps people in India check, monitor, and improve their credit scores. Its mobile app provides free bureau-i...

Oomnitza screenshot
Oomnitza

Oomnitza is an enterprise technology management platform providing IT asset lifecycle management, SaaS management, and technology workflow automation.

Oosto

'Oosto (formerly AnyVision) is an enterprise vision-AI company providing

Opal

Opal is a marketing planning and content calendar platform that gives marketing teams a single visual workspace to plan campaigns, build editorial and conten...

Opal Security

Opal Security (legal entity Perma Security, Inc.) is a next-generation access management and identity security platform that gives enterprises comprehensive ...

Opalcamera

Opal Electronics is an original hardware company based in California specializing in

Opalite Health

Opalite Health is building the language layer for healthcare. Its platform delivers real-time, AI-powered medical interpretation across 150+ languages, valid...

OPay screenshot
OPay

OPay is a Nigerian mobile money and fintech super-app operated by Blue Ridge Microfinance Bank (OPay Digital Services Limited) and majority-owned by Opera Li...

opbeat

opbeat is a company surfaced as a portfolio company of balderton-capital, creandum and added

Open

Open (Open Financial Technologies) operates at open.money as an India-based

Open

Open Insurance Pty Limited (ABN 23 166 949 444, AFSL 451712), trading

Open (open.money) screenshot
Open (open.money)

Open is one of India's leading SMB neobanks, pioneering "connected banking" - a unified business finance platform that layers payments, automated reconciliat...

Open 3D Foundation screenshot
Open 3D Foundation

The Open 3D Foundation is a Linux Foundation project supporting the Open 3D Engine (O3DE), an open source, real-time 3D engine for building games, simulation...

Open Bionics

Open Bionics is a Bristol, UK-based medical technology company that designs

Open Brewery DB screenshot
Open Brewery DB

Open Brewery DB is a free and open-source REST API providing public information on breweries, cideries, brewpubs, and bottleshops worldwide. The database con...

Open Charge Map screenshot
Open Charge Map

"Global public registry of electric vehicle charging locations"

Open Charge Map screenshot
Open Charge Map

Open Charge Map is the global public registry of electric vehicle charging locations, established in 2011 as a non-commercial, community-driven project. The ...

Open Collective screenshot
Open Collective

"Get Open Collective data"

Open Connectivity for Tours, Activities, and Attractions screenshot
Open Connectivity for Tours, Activities, and Attractions

OCTO (Open Connectivity for Tours, Activities, and Attractions) is an open standard API specification for the

Open Container Initiative screenshot
Open Container Initiative

The Open Container Initiative (OCI) is an open governance structure for creating open industry standards around container formats and runtimes, hosted under ...

Open Data Minneapolis screenshot
Open Data Minneapolis

"Spatial (GIS) and non-spatial city data for Minneapolis"

Open Data NHS Scotland screenshot
Open Data NHS Scotland

"Medical reference data and statistics by Public Health Scotland"

Open Data Regione Toscana screenshot
Open Data Regione Toscana

Open Data Regione Toscana is a open data portal open-data portal for Italy running CKAN. It exposes the CKAN catalog API, a standardized machine-readable int...

Open Data Schleswig-Holstein screenshot
Open Data Schleswig-Holstein

Open Data Schleswig-Holstein is a state government open-data portal for Germany running CKAN. It exposes the CKAN catalog API, a standardized machine-readabl...

Open Data Trentino screenshot
Open Data Trentino

Open Data Trentino is a open data portal open-data portal for Italy running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface ...

Open Dental

Open Dental is dental practice management software with an openly documented public REST API. The API is hosted at Open Dental headquarters (base https://api...

Open Development Cambodia screenshot
Open Development Cambodia

Open Development Cambodia is a organization open-data portal for Cambodia running CKAN. It exposes the CKAN catalog API, a standardized machine-readable inte...

Open Development Mekong screenshot
Open Development Mekong

Open Development Mekong is a organization open-data portal for Mekong Region running CKAN. It exposes the CKAN catalog API, a standardized machine-readable i...

Open Development Myanmar screenshot
Open Development Myanmar

Open Development Myanmar is a organization open-data portal for Myanmar running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interf...

Open Development Vietnam screenshot
Open Development Vietnam

Open Development Vietnam is a organization open-data portal for Vietnam running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interf...

Open Disease screenshot
Open Disease

"API for Current cases and more stuff about COVID-19 and Influenza"

Open English

'Open English is an online English-language learning platform for Spanish-speaking learners

Open Exchange Rates screenshot
Open Exchange Rates

Foreign exchange rates REST API providing historical and real-time currency exchange data for 200+ currencies with hourly updates and USD as the default base...

Open Exchange Rates

Open Exchange Rates provides a simple, reliable REST API for live and

Open Food Facts screenshot
Open Food Facts

Open Food Facts is a food products database made by everyone, for everyone. You can use it to make better food choices, and as it is open data, anyone can re...

Open GI

Open GI is a Worcester-headquartered insurance software house that has

Open Government Canada screenshot
Open Government Canada

Open Government Canada is a national government open-data portal for Canada running CKAN. It exposes the CKAN catalog API, a standardized machine-readable in...

Open Government, ACT screenshot
Open Government, ACT

"Australian Capital Territory Open Data"

Open Government, Argentina screenshot
Open Government, Argentina

"Argentina Government Open Data"

Open Government, Australia screenshot
Open Government, Australia

"Australian Government Open Data"

Open Government, Austria screenshot
Open Government, Austria

"Austria Government Open Data"

Open Government, Belgium

"Belgium Government Open Data"

Open Government, Canada screenshot
Open Government, Canada

"Canadian Government Open Data"

Open Government, Colombia

"Colombia Government Open Data"

Open Government, Cyprus screenshot
Open Government, Cyprus

"Cyprus Government Open Data"

Open Government, Czech Republic screenshot
Open Government, Czech Republic

"Czech Republic Government Open Data"

Open Government, Denmark screenshot
Open Government, Denmark

"Denmark Government Open Data"

Open Government, Estonia screenshot
Open Government, Estonia

"Estonia Government Open Data"

Open Government, Finland

"Finland Government Open Data"

Open Government, France screenshot
Open Government, France

"French Government Open Data"

Open Government, Germany screenshot
Open Government, Germany

"Germany Government Open Data"

Open Government, Greece screenshot
Open Government, Greece

"Greece Government Open Data"

Open Government, India

"Indian Government Open Data"

Open Government, Ireland screenshot
Open Government, Ireland

"Ireland Government Open Data"

Open Government, Italy

"Italy Government Open Data"

Open Government, Korea screenshot
Open Government, Korea

"Korea Government Open Data"

Open Government, Lithuania screenshot
Open Government, Lithuania

"Lithuania Government Open Data"

Open Government, Luxembourg screenshot
Open Government, Luxembourg

"Luxembourgish Government Open Data"

Open Government, Mexico screenshot
Open Government, Mexico

"Mexican Statistical Government Open Data"

Open Government, Mexico screenshot
Open Government, Mexico

"Mexico Government Open Data"

Open Government, Netherlands screenshot
Open Government, Netherlands

"Netherlands Government Open Data"

Open Government, New South Wales screenshot
Open Government, New South Wales

"New South Wales Government Open Data"

Open Government, New Zealand screenshot
Open Government, New Zealand

"New Zealand Government Open Data"

Open Government, Norway screenshot
Open Government, Norway

"Norwegian Government Open Data"

Open Government, Peru

"Peru Government Open Data"

Open Government, Poland screenshot
Open Government, Poland

"Poland Government Open Data"

Open Government, Portugal screenshot
Open Government, Portugal

"Portugal Government Open Data"

Open Government, Queensland Government screenshot
Open Government, Queensland Government

"Queensland Government Open Data"

Open Government, Romania

"Romania Government Open Data"

Open Government, Saudi Arabia

"Saudi Arabia Government Open Data"

Open Government, Singapore screenshot
Open Government, Singapore

"Singapore Government Open Data"

Open Government, Slovakia screenshot
Open Government, Slovakia

"Slovakia Government Open Data"

Open Government, Slovenia screenshot
Open Government, Slovenia

"Slovenia Government Open Data"

Open Government, South Australian Government screenshot
Open Government, South Australian Government

"South Australian Government Open Data"

Open Government, Spain screenshot
Open Government, Spain

"Spain Government Open Data"

Open Government, Sweden screenshot
Open Government, Sweden

"Sweden Government Open Data"

Open Government, Switzerland screenshot
Open Government, Switzerland

"Switzerland Government Open Data"

Open Government, Taiwan screenshot
Open Government, Taiwan

"Taiwan Government Open Data"

Open Government, Thailand

"Thailand Government Open Data"

Open Government, UK screenshot
Open Government, UK

"UK Government Open Data"

Open Government, USA screenshot
Open Government, USA

"United States Government Open Data"

Open Government, Victoria State Government screenshot
Open Government, Victoria State Government

"Victoria State Government Open Data"

Open Government, West Australia screenshot
Open Government, West Australia

"West Australia Open Data"

Open Liberty screenshot
Open Liberty

Open Liberty is a lightweight, open source Java application server from IBM for building cloud-native microservices and applications with full support for Ja...

Open Library screenshot
Open Library

Open Library offers a suite of APIs to help developers get up and running with its data. This includes RESTful APIs that make Open Library data available in ...

Open Loyalty

Open Loyalty is an API-first, headless loyalty and gamification platform. Every loyalty mechanic - members, transactions, points, tiers/levels, earning rules...

Open Mainframe Project screenshot
Open Mainframe Project

The Open Mainframe Project is a Linux Foundation project encouraging the use of Linux-based operating systems and open source software on mainframe computers...

Open mHealth screenshot
Open mHealth

Open mHealth is a nonprofit, community-driven initiative that develops open standards and open-source software for making patient-generated health data inter...

Open Movie Database screenshot
Open Movie Database

"Movie information"

Open Notify screenshot
Open Notify

"ISS astronauts, current location, etc"

open NRW screenshot
open NRW

open NRW is a open data portal open-data portal for Germany running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over app...

Open Page Rank screenshot
Open Page Rank

"API for calculating and comparing metrics of different websites using Page Rank algorithm"

Open Podcast API screenshot
Open Podcast API

The Open Podcast API is an initiative aiming to provide a feature-complete synchronization API specification for podcast (web) apps and user-focused servers....

Open Policy Agent screenshot
Open Policy Agent

Open Policy Agent (OPA) is an open-source project that provides a flexible and powerful policy engine for cloud-native environments. OPA enables users to def...

Open Port Technology

Open Port Technology (OpenPort) is a pan-Asian logistics and supply chain technology company that digitizes trucking, freight, and supply chain operations ac...

Open Presence

Open Presence is a company surfaced as a portfolio company of 500-global and added to the

Open Programmable Infrastructure screenshot
Open Programmable Infrastructure

The Open Programmable Infrastructure (OPI) project is a Linux Foundation initiative demonstrating real-world use cases for offloading key infrastructure mana...

Open Science Framework screenshot
Open Science Framework

"Repository and archive for study designs, research materials, data, manuscripts, etc"

Open Service Mesh screenshot
Open Service Mesh

Open Service Mesh (OSM) is a lightweight, extensible, cloud native service mesh built on Envoy and the Service Mesh Interface (SMI) specification. OSM provid...

Open Skills screenshot
Open Skills

"Job titles, skills and related jobs data"

Open Souls

Open Souls is an open-source framework and philosophy for building "AI souls" — agentic, embodied digital beings with personality, drive, and ego, built on t...

Open States screenshot
Open States

'Open States is a civic technology project that aggregates and publishes

Open Topo Data screenshot
Open Topo Data

"Elevation and ocean depth for a latitude and longitude"

Open Trivia Database screenshot
Open Trivia Database

The Open Trivia Database (OpenTDB) is a free, user-contributed trivia question database operated by Pixeltail Games LLC. It offers a JSON REST API for retrie...

Open Trivia DB screenshot
Open Trivia DB

The Open Trivia Database provides a completely free JSON API for use in programming projects. Use of this API does not require an API key, just generate the ...

Open Voice Network screenshot
Open Voice Network

The Open Voice Network is a Linux Foundation project advancing open standards for AI-enabled voice assistance systems. Its core initiatives around TrustMark ...

Open WebUI screenshot
Open WebUI

Open WebUI is a self-hosted, open-source web UI for LLMs (notably Ollama and OpenAI-compatible backends). It exposes a REST API for chats, models, prompts, k...

Open-Meteo screenshot
Open-Meteo

Open-Meteo is an open-source weather API that provides free global weather forecasts, historical reanalysis data, marine conditions, air quality indexes, and...

openAFRICA screenshot
openAFRICA

"Large datasets repository of African open data"

OpenAI screenshot
OpenAI

APIs for accessing OpenAI's artificial intelligence models including

OpenAI APIs

Collection of OpenAI's artificial intelligence APIs for natural language processing, image generation, speech, and embeddings including Chat Completions, Com...

OpenAir Publishing

OpenAir Publishing is a company surfaced as a portfolio company of 500-global and added to

OpenAlex screenshot
OpenAlex

"Open catalog of scholarly works, authors, institutions, sources, and concepts"

OpenAPI screenshot
OpenAPI

OpenAPI (formerly Swagger Specification) is a standard, language-agnostic specification for describing RESTful APIs in a machine-readable format. It enables ...

OpenAPI Generator screenshot
OpenAPI Generator

OpenAPI Generator is an open-source tool that generates client libraries, server stubs, API documentation, and configuration automatically given an OpenAPI S...

OpenAPI Initiative screenshot
OpenAPI Initiative

The OpenAPI Initiative is a Linux Foundation project that promotes the OpenAPI Specification for defining standard, language-agnostic interfaces to RESTful A...

OpenAPI TypeScript Codegen screenshot
OpenAPI TypeScript Codegen

OpenAPI TypeScript Codegen is an open source tool that generates TypeScript API clients from OpenAPI specifications, producing lightweight, fully typed clien...

OpenAPIHub screenshot
OpenAPIHub

"The All-in-one API Platform"

OpenAQ screenshot
OpenAQ

OpenAQ is a non-profit organization that focuses on collecting and sharing air quality data from around the world. By providing access to this information th...

Openart

OpenArt is an all-in-one AI creation platform for generating and editing images, video, audio, and 3D content from a single workspace. It aggregates leading ...

Openbay

Openbay is an award-winning online automotive service platform and marketplace

OpenBazaar

OpenBazaar is an open-source, decentralized peer-to-peer marketplace protocol that let buyers and sellers trade goods and services directly with one another ...

OpenBlock Labs

OpenBlock Labs builds OB-1, a self-improving autonomous coding agent that automates the software development lifecycle from PM to PR. OB-1 runs as a native t...

OpenBMC screenshot
OpenBMC

OpenBMC is a Linux Foundation project producing an open source implementation of baseboard management controller firmware. Founded by Microsoft, Intel, IBM, ...

OpenCage screenshot
OpenCage

"Forward and reverse geocoding using open data"

Opencare

Opencare is a dental care marketplace that helps patients across the United

OpenCart screenshot
OpenCart

OpenCart is a free, open-source eCommerce platform providing a REST API for managing products, categories, orders, customers, returns, and store configuratio...

OpenChain screenshot
OpenChain

OpenChain is an international standard (ISO/IEC 5230) under the Linux Foundation for open source license compliance programs. It helps organizations manage o...

OpenCitations screenshot
OpenCitations

OpenCitations is an open science research infrastructure providing free

OpenClinica

OpenClinica is a clinical-trial electronic data capture (EDC) and

OpenCola

OpenCola is a non-profit organization building free, open-source, local-first software as an alternative to corporate social media and cloud platforms. Its a...

OpenCorporates screenshot
OpenCorporates

OpenCorporates is the world's largest open database of companies, providing a REST API for searching and retrieving company registration data, officer inform...

OpenCorporates screenshot
OpenCorporates

"Data on corporate entities and directors in many countries"

OpenCost screenshot
OpenCost

An open source CNCF specification and reference implementation for real-time cost monitoring of Kubernetes infrastructure and cloud spending, enabling teams ...

Opencurriculum

OpenCurriculum is a nonprofit education-technology organization (a Y Combinator alum) that builds curriculum-planning software for K-12 schools. Its web appl...

openCypher screenshot
openCypher

openCypher is an open-source project that provides a standardized graph query language originally developed by Neo4j for querying property graphs. It enables...

opendata.gov.al (Open Data Albania)

opendata.gov.al is the national government open-data portal for Albania (Open Data Albania). It is a custom, DCAT-AP-compliant platform (an Angular single-pa...

opendata.gov.je screenshot
opendata.gov.je

opendata.gov.je is a open data portal open-data portal for JE running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface over a...

OpenData.HRO - Portal für offene Data der Hansestadt Rostock screenshot
OpenData.HRO - Portal für offene Data der Hansestadt Rostock

OpenData.HRO - Portal für offene Data der Hansestadt Rostock is a open data portal open-data portal for Germany running CKAN. It exposes the CKAN catalog API...

opendata.rks-gov.net (Kosovo Open Data) [offline]

opendata.rks-gov.net (RKS Open Data) was the national government open-data portal for the Republic of Kosovo, historically running CKAN (~v2.7). As of mid-20...

opendata.swiss screenshot
opendata.swiss

opendata.swiss is a national government open-data portal for Switzerland running CKAN. It exposes the CKAN catalog API, a standardized machine-readable inter...

OpenDataNI (Northern Ireland) screenshot
OpenDataNI (Northern Ireland)

OpenDataNI (Northern Ireland) is a regional government open-data portal for United Kingdom running CKAN. It exposes the CKAN catalog API, a standardized mach...

Opendatasoft screenshot
Opendatasoft

Open data platform with REST APIs for accessing public datasets from 1,000+ cities and organizations, providing standard OData and JSON query interfaces. Now...

OpenDNS

'OpenDNS is a cloud-delivered recursive DNS and internet security service

Opendoor screenshot
Opendoor

Opendoor is an iBuyer that lets U.S. homeowners request a near-instant cash offer on their home, sell directly to Opendoor, list with Opendoor through its ag...

Opendoor Technologies screenshot
Opendoor Technologies

'Profile for Opendoor Technologies in the API Evangelist network. Fortune F500 (rank 266).'

OpenDurian

OpenDurian is a Bangkok, Thailand based educational technology company delivering hybrid

OpenEBS screenshot
OpenEBS

OpenEBS is a popular and widely deployed open source Container Native Storage platform for stateful persistent applications on Kubernetes. It provides dynami...

OpenEnglish

'Open English is an online English-language learning company founded in 2007 and

Openet

Openet was an Irish telecommunications software company (headquartered in Dublin) that built real-time business support systems (BSS) for mobile network oper...

OpenEvidence screenshot
OpenEvidence

OpenEvidence is a clinical decision-support search platform that uses generative AI

OpenEyes Insurance

OpenEyes Insurance (OpenEyes Insurance Agency, Inc.) is an Austin, Texas-based insurtech

OpenF1 screenshot
OpenF1

OpenF1 is a free and open-source API providing real-time and historical Formula 1 data including car telemetry, lap timings, race control messages, weather, ...

openFDA screenshot
openFDA

openFDA is the FDA's open data platform providing REST APIs for public access to FDA regulatory datasets. It covers drug adverse events (FAERS), drug labelin...

openFDA screenshot
openFDA

openFDA is the U.S. Food and Drug Administration's public data platform, providing Elasticsearch-backed REST APIs serving FDA-administered data on drugs, med...

OpenFeature screenshot
OpenFeature

OpenFeature is a CNCF incubating open specification for feature flag management. It provides a vendor-agnostic

OpenFEC screenshot
OpenFEC

The Federal Election Commission (FEC) API is a RESTful web service supporting full-text and field-specific searches on FEC data. Bulk downloads are available...

OpenFEMA

OpenFEMA is FEMA's open data platform, publishing free, public,

OpenFGA screenshot
OpenFGA

OpenFGA is a CNCF incubating high-performance authorization system implementing fine-grained access control based on the Zanzibar model. It provides a flexib...

OpenFIGI screenshot
OpenFIGI

OpenFIGI is your entry point to multiple tools for identifying, mapping and requesting a free Financial Instrument Global Identifier (FIGI). OpenFIGI is an o...

OpenFin

OpenFin — now branded HERE — is the operating-system layer for enterprise financial desktops. Its container/runtime lets web applications run as secure, inte...

OpenFX

'OpenFX is a cross-border payment infrastructure provider delivering real-time foreign

OpenGamma

OpenGamma is a derivatives and margin analytics company whose technology helps trading, risk, treasury and operations teams forecast, stress test, simulate a...

OpenGraphr screenshot
OpenGraphr

"Really simple API to retrieve Open Graph data from an URL"

OpenHands screenshot
OpenHands

OpenHands (by All Hands AI, formerly OpenDevin) is an open-source autonomous coding agent platform. Ships as a Python Agent SDK, CLI, local GUI with a REST A...

Openhouse

'Openhouse is a network of neighborhood children''s learning centres in Bangalore

OpenID Connect screenshot
OpenID Connect

OpenID Connect (OIDC) is an identity authentication protocol that is an extension of OAuth 2.0. It enables clients to verify the identity of end-users and ob...

openIDL screenshot
openIDL

openIDL (Open Insurance Data Link) is a Linux Foundation project developing standardized, interoperable data frameworks for the insurance industry. It uses b...

OpenInfra Foundation screenshot
OpenInfra Foundation

The OpenInfra Foundation, which recently joined the Linux Foundation, is home to open infrastructure projects including OpenStack, Kata Containers, StarlingX...

OpenInvest

OpenInvest was a values-based / ESG investing fintech (Y Combinator and a16z backed) that let advisors and investors build and manage portfolios aligned to s...

OpenIO

OpenIO SDS is an open-source, software-defined object storage platform for building hyper-scalable, high-performance storage infrastructures. It stores data ...

OpenJS Foundation screenshot
OpenJS Foundation

The OpenJS Foundation is a Linux Foundation project that supports the growth of JavaScript and web technologies through open governance and collaboration. It...

OpenKruise screenshot
OpenKruise

OpenKruise is a CNCF incubating project providing advanced workload management and deployment automation for Kubernetes. It extends Kubernetes with enhanced ...

OpenLattice

OpenLattice was a data-integration and analytics platform built around an Entity Data Model (EDM) — a graph of entity types, property types, association type...

OpenLaws screenshot
OpenLaws

OpenLaws is a Public Benefit Corporation that provides programmatic access to U.S. law text — federal and state statutes, regulations, constitutions, and cas...

Openlayer screenshot
Openlayer

Openlayer is an AI evaluation, testing, and observability platform for

OpenLDAP screenshot
OpenLDAP

OpenLDAP is an open source implementation of the Lightweight Directory Access Protocol (LDAP) that provides directory server daemons, client libraries, and u...

OpenLigaDB screenshot
OpenLigaDB

"Crowd sourced sports league results"

Openlight

OpenLight Photonics is a silicon photonics company that designs and manufactures custom Photonic Application-Specific Integrated Circuits (PASICs) using a he...

OpenLLMetry screenshot
OpenLLMetry

OpenLLMetry is an open-source observability framework for LLM and generative AI applications, built

OpenLoop Health

OpenLoop Health is a Des Moines, Iowa-based white-label telehealth infrastructure company that powers virtual care for digital health companies, health plans...

Openly screenshot
Openly

Openly is an independent agent home insurance platform founded in 2017 and headquartered in Boston, Massachusetts. The company provides REST APIs for generat...

OpenMenu screenshot
OpenMenu

OpenMenu provides structured menu data and menu publishing for restaurants, built on the open OpenMenu Format specification. Its public REST API helps develo...

OpenMercantil screenshot
OpenMercantil

OpenMercantil is an independent public-data API for Spanish company intelligence. It indexes the Boletin Oficial del Registro Mercantil (BORME) and cross-ref...

OpenMetadata screenshot
OpenMetadata

OpenMetadata is an open-source data catalog and metadata platform providing a comprehensive REST API for managing tables, dashboards, pipelines, data quality...

OpenMeter

OpenMeter is open-source usage metering and billing for AI and API

OpenMind

OpenMind builds open-source software that makes robots useful. Its flagship product, OM1, is a modular AI Hardware Abstraction Layer (HAL) and agent runtime ...

OpenNetwork Tech.

OpenNetwork Technologies was an identity and web access management software

OpenNode screenshot
OpenNode

OpenNode is a Bitcoin and Lightning Network payment processor providing a REST API for businesses and developers to accept Bitcoin payments, create payment c...

OpenObserve screenshot
OpenObserve

OpenObserve is an open source petabyte-scale observability platform with unified logs, metrics, traces, and front-end telemetry in a single UI with SQL and P...

OpenPages

IBM OpenPages is an AI-driven, unified governance, risk, and compliance (GRC) platform delivered as a managed service on IBM Cloud. Originally founded as Ope...

OpenPanel screenshot
OpenPanel

OpenPanel is an open source product analytics platform that provides event tracking, user journey analysis, real-time dashboards, and funnel analysis, offeri...

Openpath

Openpath is a cloud-based, mobile-first access control platform for the modern workplace — touchless entry, door/reader/relay hardware (ACUs), user and crede...

Openpay

Openpay is a Mexican and Colombian online payments platform, part of the

OpenPhone

OpenPhone (rebranded to Quo in 2026) is a business phone and customer communications platform that provides shared phone numbers, calling, SMS/MMS texting, A...

OpenPipe screenshot
OpenPipe

OpenPipe is a fine-tuning and inference platform for distilling expensive frontier-LLM workloads into smaller, cheaper specialized models. Captures productio...

OpenPrescribing

OpenPrescribing.net is an open-data service built and operated by the Bennett Institute for Applied Data Science at the University of Oxford. It turns the En...

Openprise screenshot
Openprise

Free your RevOps teams from the complexities of bad data and give them data they can trust, take action on, and make better decisions with. A simple way to a...

OpenProject screenshot
OpenProject

OpenProject is an open source project management platform offering work package tracking, Gantt charts, agile boards, time tracking, BIM, and enterprise proj...

Openprose

OpenProse, Inc. builds an open-source (MIT) programming language for AI sessions: standing AI jobs are declared as durable Markdown contracts (`*.prose.md` f...

Openprovider screenshot
Openprovider

Openprovider is a wholesaler of Internet services and products with a unique platform from which you can find and manage all the products you need: domains, ...

OpenRegistry screenshot
OpenRegistry

"Real-time queries to 27 national company registries (UK, FR, DE, IT, ES, KR + 21 more)"

OpenRelay

OpenRelay is a Y Combinator-backed distributed GPU cloud for production AI inference — "the CDN of inference." It runs a global mesh of GPUs (RTX 4090/5090, ...

OpenReplay screenshot
OpenReplay

OpenReplay is an open source session replay and product analytics platform that helps developers debug web applications by recording and replaying user sessi...

Openroll

Openroll is an AI-native operating system for compensation, built for People and Finance teams. It connects to existing HRIS, ATS, ERP, and finance systems, ...

OpenRouter screenshot
OpenRouter

OpenRouter is an API platform that provides unified access to multiple AI language models through a single interface. OpenRouter acts as a "router" or gatewa...

OpenRouteService screenshot
OpenRouteService

OpenRouteService is a free, open-source geospatial API platform built

openrouteservice.org screenshot
openrouteservice.org

"Directions, POIs, isochrones, geocoding (+reverse), elevation, and more"

OpenSanctions screenshot
OpenSanctions

"Data on international sanctions, crime and politically exposed persons"

OpenSea screenshot
OpenSea

OpenSea is the world's largest NFT marketplace, offering a REST API for

OpenSearch screenshot
OpenSearch

OpenSearch is the open source, community-driven search, analytics, and

Opensense (formerly SenderGen)

Opensense (formerly SenderGen) is an email signature management platform that centrally governs email signatures, banners, and digital business cards across ...

openSenseMap screenshot
openSenseMap

"Data from Personal Weather Stations called senseBoxes"

Opensesame

'OpenSesame is an online learning course marketplace founded in 2002 and

OpenShift screenshot
OpenShift

A comprehensive API definition for Red Hat OpenShift, the enterprise Kubernetes platform.

OpenSky Network

Open-source flight tracking network with a REST API for accessing real-time and historical ADS-B aircraft state vectors, flight tracks, and airport arrivals ...

OpenSky Network screenshot
OpenSky Network

"Free real-time ADS-B aviation data"

OpenSpace screenshot
OpenSpace

OpenSpace is a visual intelligence platform for the construction industry, headquartered at 333 Kearny Street, San Francisco, California. The company pairs a...

Openspec

OpenSpec (by Fission-AI) is an open-source, lightweight spec-driven development (SDD) framework for AI coding assistants. It adds a durable spec layer so you...

OpenSponsorship

OpenSponsorship is a two-sided sports sponsorship and influencer marketing marketplace that connects brands with a network of more than 25,000 professional a...

OpenSSF screenshot
OpenSSF

The Open Source Security Foundation (OpenSSF) is a collaborative initiative under the Linux Foundation dedicated to improving the security of open source sof...

OpenStack screenshot
OpenStack

Open source cloud computing platform for building and managing public and private clouds, providing infrastructure as a service (IaaS) through a set of inter...

OpenStatus

OpenStatus is an open-source synthetic monitoring and status-page platform.

OpenStore

OpenStore (Miami Labs, Inc. d/b/a OpenStore) is a Miami-based e-commerce holding company that buys direct-to-consumer Shopify businesses from their founders,...

OpenStreetMap screenshot
OpenStreetMap

OpenStreetMap (OSM) is a collaborative project to create a free, editable map of the world. The OSM ecosystem exposes a family of public REST APIs: the main ...

OpenTable screenshot
OpenTable

OpenTable is a global restaurant reservation platform owned by Booking Holdings. The OpenTable

OpenTelemetry screenshot
OpenTelemetry

Vendor-neutral open-source observability framework for cloud-native software, providing a collection of tools, APIs, and SDKs for instrumenting, generating, ...

OpenTofu screenshot
OpenTofu

Open-source infrastructure as code tool forked from Terraform, providing a community-driven alternative for provisioning and managing cloud infrastructure us...

OpenToken

'OpenToken (OpenToken Inc.) was a San Francisco based cryptocurrency

OpenTopography API screenshot
OpenTopography API

OpenTopography API is a web service that provides users with access to high-resolution topographic data and tools for analysis and visualization. The API all...

Opentrade

OpenTrade is an institutional-grade platform for stablecoin lending and yield products, enabling fintechs, neobanks, crypto exchanges, custodians, stablecoin...

OpenTripMap screenshot
OpenTripMap

OpenTripMap provides a travel points of interest REST API with access to over 10 million POIs worldwide including attractions, restaurants, hotels, museums, ...

Opentrons screenshot
Opentrons

Opentrons is a lab automation platform providing a REST HTTP API and Python Protocol API for controlling liquid handling robots such as the Opentrons Flex an...

OpenUV screenshot
OpenUV

OpenUV provides a global real-time UV index API. The service combines meteorological inputs (ozone, cloud cover, area reflection) with NASA satellite sources...

Openverse screenshot
Openverse

Openverse is a search engine providing programmatic access to the world's largest openly-licensed media catalog, covering 800M+ images and audio tracks from ...

OpenVisionAPI

"Open source computer vision API based on open source models"

OpenVPN screenshot
OpenVPN

OpenVPN is a secure networking company providing VPN and Zero Trust network access solutions for over 20,000 organizations worldwide, offering both the self-...

OpenWallet Foundation screenshot
OpenWallet Foundation

The OpenWallet Foundation is a Linux Foundation Europe project that brings developers and standards organizations together to facilitate global interoperabil...

OpenWeather screenshot
OpenWeather

OpenWeather is a data platform that provides accurate and reliable weather information to individuals, businesses, and organizations around the world. They g...

OpenWeatherMap screenshot
OpenWeatherMap

OpenWeather (operating openweathermap.org) is a global weather data platform delivering current

OpenWeb

OpenWeb (formerly Spot.IM) is a community and audience-engagement platform for publishers, delivering OpenWebOS — a unified, end-to-end suite for building co...

Openwhyd screenshot
Openwhyd

"Download curated playlists of streaming tracks (YouTube, SoundCloud, etc...)"

Openwork

OpenWork is an open-source, enterprise-ready alternative to Claude Cowork — a desktop application and agent runtime, built as a GUI for OpenCode, that lets p...

OpenX screenshot
OpenX

OpenX is an independent supply-side platform (SSP) and programmatic ad exchange headquartered in Pasadena, California, founded in 2008. OpenX connects publis...

OpenYurt screenshot
OpenYurt

OpenYurt is a CNCF incubating project that extends Kubernetes for edge and cloud-edge collaboration scenarios. It provides node autonomy for edge nodes to co...

OpenZeppelin screenshot
OpenZeppelin

OpenZeppelin is a Web3 security platform providing tools for secure smart contract development, deployment, monitoring, and automation. The platform includes...

Oper

'Oper (Oper Credits) is a Belgium-based fintech that provides digital mortgage

Oper Credits

Oper Credits is a Belgian digital mortgage origination platform (Brussels, founded 2019) that lets banks, lenders, insurers, and brokers offer and process en...

Opera

Opera is the Norway-based maker of the Opera, Opera GX, and Opera Mini web browsers and operator of the Opera Ads advertising and monetization platform. Oper...

Operand

Operand is an AI-enabled pricing and commercial strategy platform for consumer retail, founded in 2024 and backed by Felicis, Y Combinator, SV Angel, and Som...

Operant

Operant AI is a San Francisco-based runtime security company (founded 2021, backed by Felicis) that protects cloud and AI applications with real-time, Kubern...

Operation Support Equipment screenshot
Operation Support Equipment

API for managing and accessing operation support equipment data, inventory, maintenance records, and deployment information for operational logistics and equ...

Operator Framework screenshot
Operator Framework

The Operator Framework is a CNCF incubating toolkit for building and managing Kubernetes Operators. It includes the Operator SDK for scaffolding and building...

Opereit

Opereit is a Barcelona-based logistics technology company building AI agents that audit, claim, and recover logistics costs autonomously. Its agents detect c...

Operon

Operon is an AI-powered manufacturing intelligence platform (Y Combinator S2026) that turns P&IDs (Piping & Instrumentation Diagrams), schematics, datasheets...

OPGG

OP.GG is the world's leading League of Legends statistics and performance tracking platform. Founded in Seoul, South Korea and launched in 2013, it grew from...

Ophelia

Ophelia is a telehealth company delivering online treatment for opioid use disorder (OUD) through medication-assisted treatment (MAT). Founded in 2020 and ba...

Ophelia Health

Ophelia is a telehealth company providing private, evidence-based medication-assisted treatment (MAT) for opioid use disorder from home. Founded in 2019 by Z...

Opik screenshot
Opik

Opik is an open-source LLM evaluation, testing, and tracing platform developed by Comet ML that enables developers to debug, evaluate, and monitor LLM applic...

Opkit

Opkit was a healthcare automation company that built an automated

Opna Bio

Opna Bio is a clinical-stage biopharmaceutical company focused on oncology,

OPNsense screenshot
OPNsense

OPNsense is an open source FreeBSD-based firewall and routing platform providing stateful packet filtering, VPN (IPsec, OpenVPN, WireGuard), intrusion detect...

Opolskie Open Data screenshot
Opolskie Open Data

Opolskie Open Data is a regional government open-data portal for Poland running DKAN.

Oportun

'Oportun (Nasdaq: OPRT) is a mission-driven financial services company and U.S. Treasury-certified

OPOWER

Opower is a customer engagement and energy efficiency cloud platform for utilities, now delivered as Oracle Utilities Opower after Oracle acquired the compan...

Opply

Opply is a supply chain operations platform for food and beverage brands that automates ingredient and packaging sourcing, ordering, logistics, and supplier ...

Opsani

Opsani was an enterprise software company based in Redwood City, California that delivered an ML-driven cloud platform for Continuous Optimization as a Servi...

Opsera

Opsera is an AI-powered unified DevOps platform that helps enterprise software teams orchestrate the full software delivery lifecycle from a single control p...

OpsGenie screenshot
OpsGenie

OpsGenie is an incident management and alerting platform, now part of

OPSI Slovenia screenshot
OPSI Slovenia

OPSI Slovenia is a national government open-data portal for Slovenia running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface...

OpsLevel screenshot
OpsLevel

OpsLevel is a prescriptive internal developer portal for cataloging, measuring, and scaffolding services according to engineering best practices.

opsmatic

Opsmatic was a San Francisco-based infrastructure monitoring startup founded in 2013

OpsMill

OpsMill is the company behind Infrahub, an open-source, graph-based infrastructure data management platform that unifies a source of truth for network, data ...

OpsRamp screenshot
OpsRamp

OpsRamp is an AIOps and IT operations management platform for hybrid infrastructure monitoring and management.

Optain

'Optain (Optain Health) is a healthcare technology company delivering AI-powered

Opterrix screenshot
Opterrix

Opterrix delivers real-time and historical weather and natural hazard intelligence to inform and automate key decision-making throughout the insurance value ...

Opti

Opti is an AI-native identity and access management (IAM) platform for enterprises struggling with access sprawl across human, non-human, and agentic identit...

Optiant

Optiant, Inc. was a Boston-area supply chain optimization software company founded in 2000

Optibus

'Optibus is a cloud-native, end-to-end operating system for public transportation

Optic

Optic is an open source tool for OpenAPI linting, diffing, and testing that helps prevent breaking changes, publish accurate documentation, and improve API d...

Optichron

Optichron is a company surfaced as a portfolio company of battery-ventures and added to the

OpticOdds screenshot
OpticOdds

OpticOdds Sports Betting API offers real-time betting odds for main lines, player props, alternate markets, injury data, schedules, ranking, scores and more ...

Optimal

Optimal is a preventive-health and longevity company based in Mexico City,

Optimal Dynamics

'Optimal Dynamics is the Decision Company for trucking. Its Transportation

Optimism screenshot
Optimism

Optimism is an Ethereum Layer 2 scaling network and the originator of the OP Stack — an open-source, modular rollup framework that powers OP Mainnet and a gr...

Optimism Etherscan

Optimism Etherscan is the official blockchain explorer and API platform for the Optimism L2 network (OP Mainnet, chain ID 10). It provides REST APIs for quer...

Optimity

Optimity is a health and rewards platform (myoptimity.com) that helps millions of members live healthier, wealthier, and longer through gamified micro-learni...

Optimizely

Optimizely is a digital experience platform that provides A/B testing, feature flagging, content management, and commerce solutions for enterprises. Their de...

OptimizerAI

OptimizerAI is an AI-powered sound effects (SFX) foundation model that generates unlimited, high-quality, royalty-free audio from text prompts or reference a...

Optimotive

Optimotive is an autonomous-robotics company building a vertically integrated fleet of advanced robots for the toughest, most extreme environments across con...

Optimyze

Optimyze (Optimyze.cloud Inc.) was a Zurich, Switzerland based continuous-profiling startup, seeded by Andreessen Horowitz (a16z) in 2020, and the maker of P...

Optimyzee

Optimyzee is an AI-powered ad management platform that structures and optimizes

Option Care Health screenshot
Option Care Health

'Profile for Option Care Health in the API Evangelist network. Fortune F1000 (rank 918).'

Options Technology screenshot
Options Technology

Options Technology (Options IT) is a capital markets managed services

OptiSigns

OptiSigns is a cloud digital signage platform that turns any TV or

Optivolt Labs

Optivolt Labs (operating as Optivolt) is a Burlingame, California solar technology company building intelligent home solar systems with power electronics emb...

Optiwatt

Optiwatt is a consumer-centric energy management platform that helps electric-vehicle drivers and homeowners lower their electricity bills by automatically s...

Opto

Opto (Opto Investments) is an end-to-end private markets investment platform built for wealth managers - RIAs, family offices, and private banks. The platfor...

OptoAtmospherics

OptoAtmospherics, Inc. is an Ann Arbor, Michigan company (founded 2009, spun out of Michigan

Optoscale

Optoscale (OptoScale AS) is a Norwegian aquaculture technology company founded

OptScale screenshot
OptScale

OptScale is an open-source FinOps and cloud cost optimization platform by Hystax supporting AWS, Azure, GCP, Alibaba Cloud, and Kubernetes.

Optum

Optum, part of UnitedHealth Group, is a health services and technology company that operates one of the largest medical and pharmacy networks in the United S...

Opus

OpusClip (Opus) is an AI video platform that turns long-form videos into short-form, viral clips and publishes them to social platforms. The OpusClip API let...

OpusClip

OpusClip (opus.pro), operated by Opusclip Inc. of Mountain View, California, is an AI video platform used by 16M+ creators and businesses. It spans two produ...

Opyn screenshot
Opyn

Opyn is a DeFi options protocol on Ethereum mainnet best known for Squeeth

Oracle screenshot
Oracle

Collection of Oracle's APIs and developer resources across cloud infrastructure,

Oracle APEX screenshot
Oracle APEX

Oracle Application Express (APEX) is a low-code development platform that enables you to build scalable, secure enterprise apps with world-class features.

Oracle Cloud Infrastructure screenshot
Oracle Cloud Infrastructure

Collection of Oracle Cloud Infrastructure (OCI) REST APIs for managing cloud resources and services.

Oracle Container Engine for Kubernetes screenshot
Oracle Container Engine for Kubernetes

Oracle Container Engine for Kubernetes (OKE) is a managed Kubernetes service that simplifies the deployment, management, and scaling of containerized applica...

Oracle Database screenshot
Oracle Database

APIs and interfaces for Oracle Database management, querying, and administration.

Oracle Database 11g screenshot
Oracle Database 11g

Collection of APIs and interfaces available for Oracle Database 11g.

Oracle Database 19c

Oracle Database 19c is a multi-model database management system that provides a comprehensive platform for enterprise data management, analytics, and applica...

Oracle E-Business Suite screenshot
Oracle E-Business Suite

A collection of APIs for Oracle E-Business Suite (EBS), Oracle's comprehensive suite of integrated, global business applications that supports today's evolvi...

Oracle Eloqua screenshot
Oracle Eloqua

Oracle Eloqua is a marketing automation platform that provides tools for lead management, email marketing, and marketing campaign management through comprehe...

Oracle Eloqua screenshot
Oracle Eloqua

Oracle Eloqua is a B2B marketing automation platform within Oracle Marketing Cloud that enables marketers to plan and execute multi-channel campaigns, manage...

Oracle Enterprise Manager screenshot
Oracle Enterprise Manager

Oracle Enterprise Manager (OEM) provides a comprehensive management platform for managing Oracle IT infrastructure and applications. The APIs enable programm...

Oracle Essbase screenshot
Oracle Essbase

Oracle Essbase is a multi-dimensional database management system that provides a multidimensional analytical platform for business intelligence applications,...

Oracle Financial Applications screenshot
Oracle Financial Applications

Collection of APIs for Oracle's suite of financial management applications including ERP Cloud, EPM Cloud, and related financial services.

Oracle Financials screenshot
Oracle Financials

Collection of Oracle Financials Cloud APIs for financial management, accounting, and reporting.

Oracle Financials 12 screenshot
Oracle Financials 12

Collection of REST APIs for Oracle E-Business Suite Financials Release 12.

Oracle Fusion Cloud Applications screenshot
Oracle Fusion Cloud Applications

Oracle Fusion Cloud Applications represent a comprehensive suite of cloud-based enterprise resource planning (ERP), human capital management (HCM), customer ...

Oracle General Ledger screenshot
Oracle General Ledger

Oracle Fusion Cloud General Ledger provides REST APIs for managing core financial accounting operations within Oracle Cloud ERP. These APIs enable programmat...

Oracle GoldenGate screenshot
Oracle GoldenGate

Oracle GoldenGate enables real-time data integration and replication in heterogeneous IT environments. These APIs provide programmatic access to manage and m...

Oracle Health Data Intelligence screenshot
Oracle Health Data Intelligence

Oracle Health Data Intelligence is a comprehensive platform that leverages advanced analytics and artificial intelligence to provide actionable insights and ...

Oracle Integration

Oracle Integration provides native connectivity to Oracle and non-Oracle Software as a Service (SaaS) and on-premises

Oracle NetSuite screenshot
Oracle NetSuite

Oracle NetSuite is a cloud-based business management suite that combines

Oracle NetSuite screenshot
Oracle NetSuite

Oracle NetSuite is a cloud-based ERP suite covering financials, accounting,

Oracle Partitioning screenshot
Oracle Partitioning

Oracle Partitioning enables tables and indexes to be partitioned into smaller, more manageable pieces, improving performance, availability, and manageability...

Oracle Planning screenshot
Oracle Planning

A collection of APIs for Oracle Planning and Budgeting Cloud Service (PBCS) and Enterprise Performance Management (EPM) Planning. Oracle EPM Cloud provides R...

Oracle Platforms screenshot
Oracle Platforms

A collection of APIs and services provided by Oracle's cloud and enterprise platforms.

Oracle Primavera screenshot
Oracle Primavera

Oracle Primavera is a portfolio of project portfolio management (PPM) applications for construction, engineering, and capital project industries. Primavera A...

Oracle Procurement screenshot
Oracle Procurement

A collection of APIs for Oracle Procurement Cloud services, enabling procurement processes, supplier management, purchasing, and spend analysis.

Oracle Retail screenshot
Oracle Retail

Oracle Retail is a suite of cloud and on-premises applications for retailers spanning merchandising, pricing, supply chain, omnichannel order management, poi...

Oracle Siebel screenshot
Oracle Siebel

Oracle Siebel CRM APIs provide programmatic access to customer relationship management functionality including sales, marketing, and service automation capab...

Oracle Transportation Management screenshot
Oracle Transportation Management

Oracle Transportation Management (OTM) is a logistics platform delivered as part of Oracle Fusion Cloud Transportation and Global Trade Management. OTM APIs ...

Oracle WebLogic Server screenshot
Oracle WebLogic Server

APIs for managing and monitoring Oracle WebLogic Server - a leading platform for building and deploying enterprise Java applications.

Oracle WebLogic Server APIs screenshot
Oracle WebLogic Server APIs

Collection of APIs and resources for Oracle WebLogic Server administration and management. WebLogic Server is Oracle's enterprise-grade Java EE application s...

Oradian

Oradian is an AI-native, cloud-based core banking platform that helps banks, lenders, microfinance institutions, and fintechs in Asia, Africa, and Europe rep...

Orakl

Orakl Oncology is a Paris-based TechBio company, a spin-off from the Gustave Roussy cancer institute, building an AI-powered drug-development platform that c...

Oraliva

OraLiva, Inc. is a dental diagnostics company developing an AI-powered

Orama

Orama is an open-source, in-memory search engine and RAG pipeline (full-text,

Orange screenshot
Orange

Orange Developer offers a portfolio of network, communication, identity, location, payment, IoT, and cloud APIs that allow developers to build new customer e...

Orange Business screenshot
Orange Business

Orange Business is the B2B, telco-cloud, and developer arm of Orange S.A. — France's leading

Orange Health

Orange Health Labs is an Indian at-home diagnostics laboratory serving Bengaluru, Delhi, Gurgaon, Noida and Hyderabad, offering 60-minute home sample collect...

Orange Logic

Orange Logic builds OrangeDAM (formerly branded Cortex), an enterprise

Orapharma

Orapharma is a specialty pharmaceutical company and a division of Bausch

ORAS screenshot
ORAS

ORAS (OCI Registry As Storage) is a CNCF project that provides a CLI and a set of client libraries for pushing and pulling arbitrary OCI artifacts to and fro...

Oration *

'Oration (Oration PBC, product OrationRx) was a Foster City, California prescription-savings

Orative

'Orative Corporation was an enterprise software company that built conferencing and

Oratomic

'Oratomic is a Pasadena, California quantum computing company where leading researchers

Orb screenshot
Orb

Orb is a billing infrastructure platform providing usage-based pricing, metering, and invoicing for API and cloud products.

Orb screenshot
Orb

Orb is a usage-based billing and metering platform that turns product

ORB Intelligence

"Company lookup"

Orbicle Bio

Orbicle Bio is an agricultural biotechnology startup developing carbon-negative,

Orbii

Orbii is a Riyadh-based credit infrastructure company providing AI-powered underwriting and lending infrastructure for banks, fintechs, neobanks, and B2B pla...

Orbii Tech Ltd

Orbii is a MENA-region credit and lending infrastructure company. Its API turns raw business financial data - bank transactions and invoices - into automated...

Orbio

'Orbio Earth is a climate-tech company (founded 2021; Dover, Delaware, USA and Cologne, Germany)

Orbis Education

Orbis Education is a healthcare education services company founded in 2003 that

Orbit

Developer relations and community intelligence platform with a REST API for tracking member activities, measuring community growth, and managing developer ad...

Orbit Fab

Orbit Fab is an in-space refueling company building "Gas Stations in Space" — the propellant supply infrastructure that lets satellites and spacecraft be ref...

Orbital screenshot
Orbital

Orbital is a data gateway and integration platform that connects APIs, databases, event streams, and other data sources without requiring glue code or manual...

Orbital Arc

Orbital Arc is a Houston-based deep-tech spacecraft propulsion startup founded in 2023 by

Orbital ATK

Orbital ATK was an American aerospace manufacturer and defense industry company formed in February 2015 by the merger of Orbital Sciences Corporation and the...

Orbital Insight screenshot
Orbital Insight

Orbital Insight was a Palo Alto, California geospatial analytics company founded in 2013 by James Crawford (formerly Bell Labs, Google Books, and NASA's Mars...

Orbital Operations

'Orbital Operations is a space-defense technology company founded in 2024 and based in Huntington

Orbital Therapeutics

Orbital Therapeutics was a Cambridge, Massachusetts biotechnology company developing next-generation RNA medicines, combining circular and linear RNA, target...

Orby AI

Orby AI is an enterprise generative process automation company that uses Large Action Models, neuro-symbolic reasoning, and agentic process discovery to obse...

Orca

Orca is the leading user-friendly concentrated-liquidity automated market maker (AMM) on Solana, built around Whirlpools. Liquidity providers concentrate cap...

Orca Bio

'Orca Bio is a late-stage biotechnology company developing high-precision

Orca Bio

Orca Bio is a late-stage biotechnology company, headquartered in Menlo Park, California with

Orca Security screenshot
Orca Security

Orca Security is an agentless cloud security platform that uses its patented

Orchard

Orchard (Orchard Platform Markets) was a New York City online-lending technology company founded in 2013 that provided data, analytics, reporting, and an ord...

Orchard Labs

Orchard Labs Inc. is a Toronto-based e-commerce company, founded in 2013, that buys, refurbishes,

Orchard Robotics

Orchard Robotics (Orchard AI, "The AI Farming Company") is an agricultural technology startup founded in 2022 that builds AI-powered camera systems and farm-...

Orchestra

Orchestra is an agentic operations platform for drug development and life sciences R&D organizations. The software helps biotech and pharmaceutical teams uni...

Orchestra Bio

Orchestra (orchestra.bio) is an agentic operations platform for drug development and life sciences R&D organizations, helping teams unify planning across lea...

Orchid Labs

Orchid Labs is the company behind Orchid, an open-source, decentralized marketplace for bandwidth and a privacy-focused VPN. Orchid lets users pay for VPN se...

ORCID screenshot
ORCID

ORCID provides a persistent digital identifier (an ORCID iD) that you own and control, and that distinguishes you from every other researcher. ORCID provides...

Ordana

Ordana provides AI agents that run wholesale order-desk operations for distributors, reading every order across email, fax, PDF, EDI, voice, SMS and chat, re...

Order Desk

Order Desk is an ecommerce order management and fulfillment routing platform

OrderCircle

OrderCircle is a B2B wholesale order management software platform, founded in 2015 in San

Orderful

Orderful is a modern B2B trading and EDI platform that lets companies connect once to transact with any partner in their supply chain without building custom...

Ordergroove

Ordergroove is an enterprise subscription and relationship-commerce

Orderly Health

Orderly Health is a Denver, Colorado healthcare data company that keeps provider directories accurate and usable. Founded in 2015, its API-first platform use...

Orderly Network

Orderly Network is an omnichain, orderbook-based trading infrastructure that provides perpetual-futures liquidity for decentralized exchanges and builders. I...

Ordermark

Ordermark is a restaurant technology company that consolidates online food delivery and takeout orders from third-party channels such as DoorDash, Uber Eats,...

Orders screenshot
Orders

This is a template APIs.json for a orders API, to be used in storytelling, training, and knowledge bases.

Ordo

Ordo (operated by The Smart Request Company Ltd, ordohq.com / ordopay.com) is a United Kingdom open-banking payments provider that lets businesses collect mo...

Ordoro screenshot
Ordoro

'Ordoro is a multi-channel order management and ecommerce logistics platform

Ordr

Ordr provides AI-powered security for connected devices, delivering a Cyber Asset Attack Surface Management (CAASM) platform that discovers, classifies, and ...

Ordway screenshot
Ordway

Ordway is a billing and revenue automation platform providing REST APIs for managing subscriptions, invoicing, payments, revenue recognition, and financial r...

Organon screenshot
Organon

Organon & Co. is a Fortune 500 global healthcare company focused on improving the health of women throughout their lives. Spun off from Merck in 2021, Organo...

Orgspace

Orgspace, Inc. was a B2B people-operations software company offering org

oricell

Oricell Therapeutics (原启生物) is a Shanghai-based clinical-stage biopharmaceutical

Origami Logic

'Origami Logic was a marketing-intelligence / big-data analytics company (backed by

Origami Risk

Origami Risk is a Chicago-headquartered risk, safety and insurance SaaS

Origami Robotics

Origami Robotics is a Y Combinator (Winter 2026) hardware startup based in Millbrae, California building advanced robotic hands designed specifically for mac...

OriGene Technologies

OriGene Technologies, Inc. is a life sciences company that develops and

Origin

Origin (Origin Markets) is a digital debt capital markets (DCM) platform that

Origin Bio

Origin Bio is a cancer-biology research company that generates spatial, molecular, and functional maps from patient tumor samples to study cancer in its nati...

Origin Financial

Origin (Blend Financial Inc. DBA Origin Financial) is a personal finance

Origin Protocol

'Origin Protocol builds permissionless DeFi infrastructure for yield-bearing

Oriient

Oriient provides software-only, hardware-free indoor positioning ("indoor GPS") and navigation delivered as a SaaS SDK. Its geomagnetic technology reaches ro...

Orion by Gravity

Orion by Gravity is a collaborative, AI-native analytics platform built by Gravity (bygravity.com) that connects directly to your data warehouse — Snowflake,...

Orion Health screenshot
Orion Health

Orion Health is a global healthcare technology company that provides health information technology solutions, including population health management, health ...

Orion Health screenshot
Orion Health

"Medical platform which allows the development of applications for different healthcare scenarios"

Orion Multisystems

Orion Multisystems is a company surfaced as a portfolio company of battery-ventures and added

Orionsec

'Orionsec (ORION Security) is a data loss prevention (DLP) platform that

Orizn Visa

"Visa requirements for 199 countries, 39K+ passport-destination pairs in 15 languages"

Orkes screenshot
Orkes

Orkes is a modern workflow orchestration platform built on Netflix Conductor for orchestrating microservices, AI agents, and durable workflows.

Ornadyne

Ornadyne is a Los Angeles hard-tech startup building autonomous flapping-wing UAVs (ornithopters) that look and fly like real birds for covert reconnaissance...

Ornikar

'Ornikar is a French online driving school and insurance company that guides

Orolabs

ORO Labs provides an agentic procurement orchestration platform for enterprise spend management. It coordinates people, processes, systems, and data so emplo...

Orori

Orori is a company surfaced as a portfolio company of 500-global and added to the API Evangelist

Orqa

Orqa is an aerial robotics company founded in 2018 and headquartered in

Ortec International

Ortec International is a company surfaced as a portfolio company of battery-ventures and

Orthocon

'Orthocon, now operating as Abyrx, is a surgical-therapeutics medical

Orthogonal

Orthogonal is a unified API and payment layer for AI agents, backed by Pantera Capital and Y Combinator. An agent describes what it needs in natural language...

Ortto

Ortto (formerly Autopilot) is a marketing automation, customer data

Orum

Orum is a payments infrastructure company that lets businesses move money and verify bank accounts through a single unified API. Its Deliver product provides...

Orus

'Orus is a French online insurance broker ("l''assurance professionnelle en ligne")

Orval screenshot
Orval

Orval is an open source tool that generates TypeScript API clients, React Query hooks, Angular services, and mock service workers from OpenAPI specifications...

Ory screenshot
Ory

Ory is an open source identity infrastructure platform providing OAuth2 and OpenID Connect (Hydra), identity and user management (Kratos), permissions and au...

Ory

Ory builds open-source identity and access infrastructure and runs it as

Osana

Osana is a company surfaced as a portfolio company of general-catalyst and added to the API

Oscar

Oscar Health (NYSE: OSCR) is a technology-driven health insurance company founded in 2012 and headquartered in New York City. It offers individual and family...

OSCAR EMR

OSCAR EMR is an open-source electronic medical record (EMR) system created by Dr. David Chan and McMaster University's Department of Family Medicine, and one...

Oscar Health screenshot
Oscar Health

Oscar Health is a technology-driven health insurance company offering individual, small group, and Medicare Advantage plans. It uses software, member-facing ...

OSFI

The Office of the Superintendent of Financial Institutions (OSFI / BSIF) is Canada's federal

OSGi screenshot
OSGi

OSGi is a set of specifications that define a dynamic component system for Java. It enables modular, service-oriented Java applications by managing the life ...

OSHA

Occupational Safety and Health Administration - U.S. federal agency responsible for setting and enforcing workplace safety and health standards. OSHA provide...

Oshi Health

'Oshi Health is a virtual, whole-person gastrointestinal (GI) care clinic

Oshkosh screenshot
Oshkosh

Oshkosh Corporation is a Fortune 500 industrial company that designs and builds purpose-built vehicles and vehicle bodies, including access equipment, defens...

OSIsoft

'OSIsoft was the enterprise software company behind the PI System, the

Osisoft Pi screenshot
Osisoft Pi

OSIsoft PI System is a real-time data management platform used by industrial organizations to capture, analyze, and visualize operational data from sensors, ...

OSlash

'OSlash is a productivity tool that lets teams create short, memorable

Osly

Osly is an AI workflow automation platform (a product of Alore AI) that lets startups

osmAPI screenshot
osmAPI

osmAPI is a unified AI gateway that routes requests to OpenAI, Anthropic, Google, and 14+ LLM providers through a single API. Drop-in compatible with the Ope...

Osmaura

Osmaura is a Y Combinator (Summer 2026) startup building an AI-powered business development platform for corporate law firm partners. Its agents monitor the ...

Osmind

Osmind is an interventional psychiatry platform that powers what it describes as the largest network of interventional psychiatry practices in the United Sta...

Osmo

'Osmo (Tangible Play) makes hands-on, screen-interactive learning games

Osmos

Osmos is an AI-powered data ingestion and data onboarding platform that helps companies import, clean, transform, and validate data arriving from customers, ...

Osmosis

Osmosis (Gulp AI Inc.) is a forward-deployed reinforcement-learning platform for post-training large language models. Teams implement an AgentWorkflow and a ...

Oso Cloud screenshot
Oso Cloud

Oso Cloud is an authorization-as-a-service platform that provides a REST API for defining and enforcing relationship-based access control policies. It enable...

Osseus

Osseus is a secure research intelligence platform - "the secure research brain for R&D" - that connects the tools teams already use, scattered documents, and...

Ossium Health

Ossium Health is a bioengineering company developing off-the-shelf cell therapies manufactured from stem cells recovered from deceased organ and tissue donor...

Ossus

Ossus builds AI-native intelligence for cultural institutions, starting with libraries. Its flagship product is Ossus ILS, a modern integrated library system...

Ostaz

Ostaz is a company surfaced as a portfolio company of 500-global and added to the API Evangelist

Ostium Labs

Ostium is a decentralized perpetual-futures exchange that lets traders access global real-world-asset markets — stocks, ETFs, commodities, indices, forex and...

Ostra Security

Ostra Security is a managed security services provider (MSSP) that delivers enterprise-grade cybersecurity as an outcome-focused, fully managed service under...

Ostrom

Ostrom is a fully digital green-energy provider based in Berlin, Germany, offering variable, fixed, and dynamic electricity tariffs managed entirely through ...

Osu

'Osu is a company surfaced as a portfolio company of creandum and added to the API Evangelist

Osyva

Osyva is a B2B commerce and procurement platform for the veterinary supply sector in Colombia and Latin America ("Gestiona tus compras veterinarias"), connec...

Others
Otis

Otis was an alternative-asset investing platform that let retail investors buy fractional

Otis Worldwide

Otis Worldwide is the world's leading manufacturer, installer, and servicer of elevators, escalators, and moving walkways, serving customers in more than 200...

Oto Capital

OTO (Oto Capital) is India's leading platform to discover, research, and buy two-wheelers

OTO Global

OTO is a multi-carrier shipping and fulfillment platform for e-commerce businesses, headquartered in Saudi Arabia and serving 10,000+ merchants. It connects ...

Otonomo

Otonomo operates a connected-vehicle data platform that aggregates, normalizes and delivers telematics and mobility data from millions of connected cars to f...

Otrafy

Otrafy is an AI-powered supplier management platform that automates regulatory compliance, supplier data collection, and supply chain risk assessment for QA,...

Otreeba

Open Cannabis Data for Your Technology. Otreeba comes from the word "abierto" which means "open." Otreeba offers standardized cannabis data and normalization...

Otrium

'Otrium is an online designer fashion outlet, headquartered in Amsterdam,

Ott Risk

OTT Risk is a UK- and US-based insurtech Managing General Agent (MGA) building

Otter screenshot
Otter

Otter (TryOtter) is a Restaurant Operating System used by hundreds of thousands of restaurants worldwide to aggregate delivery and online orders, consolidate...

Otter.ai screenshot
Otter.ai

Otter.ai is an AI-powered meeting transcription and conversational intelligence platform that automatically records, transcribes, and summarizes meetings acr...

Otterize

Otterize is an open-source, Kubernetes-native platform for intent-based access control (IBAC). Application teams declare which services need to talk to which...

OtterTune

'OtterTune was a database optimization ("on autopilot") start-up spun out of

OTTO

OTTO (myotto.net) is a Techstars-backed company surfaced as a portfolio lead and added to

Ottonova

Ottonova is a Munich-based digital private health insurance provider (private Krankenversicherung) founded in 2015, positioned as "the insurance for the mobi...

Ottopay

Ottopay is a company surfaced as a portfolio company of kindred-ventures and added to the

Oula

Oula is a modern maternity and women's healthcare provider offering collaborative pregnancy, gynecology, preconception, and miscarriage care across New York ...

Oula Health

'Oula Health (Oula) is a modern maternity and women''s health provider operating

Oumi

Oumi (Open Universal Machine Intelligence) is an open-source, Apache-2.0 platform for ML engineers and researchers to train, fine-tune, evaluate, and deploy ...

Oumla Ltd

Oumla is a Saudi-based provider of enterprise-grade digital asset infrastructure for regulated institutions. Its Core API delivers MPC-based wallet and addre...

Our Place

Our Place is a direct-to-consumer kitchenware and cookware brand, best known for the multi-purpose Always Pan, selling cookware, bakeware, appliances, tablew...

Oura screenshot
Oura

Oura is a health-technology company that makes the Oura Ring — a titanium

Oura Ring screenshot
Oura Ring

Oura Ring is a smart ring health tracking platform that provides a REST

OurAirports screenshot
OurAirports

OurAirports is an open airport data platform maintained by a global community of aviation enthusiasts. It provides a comprehensive, community-maintained data...

OurCrowd

'OurCrowd is a global private-market investment platform that gives accredited and institutional

OurHealthMate

OurHealthMate was an Indian digital health-tech startup (a 500 Global / 500 Startups portfolio company) that let non-resident Indians book medical appointmen...

Ouro Medicines

'Ouro Medicines is a clinical-stage biotechnology company based in South

OurPeople screenshot
OurPeople

The OurPeople API uses common standards to allow easy read and write access to your data. OurPeople is a frontline communications platform that helps organiz...

Outbrain screenshot
Outbrain

Outbrain Inc. (NASDAQ: OB), which closed its acquisition of Teads in early 2025 and now operates publicly as Teads, is one of the largest open-internet a...

Outcomes4Me

'Outcomes4Me is a digital health company providing a personalized cancer care navigation

Outdoor Voices

'Outdoor Voices is an Austin-founded direct-to-consumer activewear and

Outerbounds

Outerbounds is a fully managed platform for building and deploying production-grade AI, ML, and data systems, built on the open-source Metaflow framework ori...

Outerwall

Outerwall was a U.S. company specializing in automated retail with brands including Coinstar coin-counting kiosks and Redbox movie rental kiosks before being...

Outfittery

'Outfittery is a European personal-shopping and personalized-fashion

OUTFRONT Media screenshot
OUTFRONT Media

OUTFRONT Media is a U.S. out-of-home (OOH) advertising company and real estate investment trust (NYSE: OUT) operating a national portfolio of billboards, dig...

Outil Achats

Outil Achats refers to French procurement and purchasing tools used by public and private sector organizations for managing tenders, suppliers, and contracts...

Outils De Gestion Des Risques

Outils de Gestion des Risques refers to risk management tools and services used in French-speaking business and regulatory environments, covering risk assess...

Outils De Tarification

Outils de Tarification refers to pricing and tarification tools used in French-speaking business environments for managing pricing, tariffs, and cost calcula...

Outils De Transfert

Outils de Transfert refers to file transfer and data transfer tools used in French-speaking business environments.

Outils De Travail Digitaux

Outils de Travail Digitaux refers to digital workplace tools and collaboration platforms used in French-speaking business environments.

Outils Digitaux

Outils Digitaux refers to digital tools and resources for developers, designers, and digital professionals in French-speaking environments.

Outlier

Outlier is a consumer online-education company that delivers college-level, for-credit courses (Calculus, Psychology, Financial Accounting, Computer Science,...

Outline screenshot
Outline

Outline is an open-source team knowledge base and wiki with a fully featured RPC-style REST API for programmatically managing documents, collections, teams, ...

OutlookSoft

OutlookSoft was a corporate performance management (CPM) software company providing

Outlyer

Outlyer is a company surfaced as a portfolio company of battery-ventures and added to the

Outpace Bio

'Outpace Bio is a clinical-stage biotechnology company applying AI-powered

Outpost

Outpost is a Merchant of Record and Tax of Record platform for cross-border commerce, letting retailers sell into new markets while Outpost takes on the lega...

Outpost Bio

Outpost Bio builds frontier AI foundation models for the human microbiome. Its "lab-in-the-loop" platform pairs high-throughput wet-lab experiments with mach...

Output screenshot
Output

Output is a Los Angeles-based music software company founded in 2013 by composer and CEO Gregg Lehrman that makes creative virtual instruments, audio effects...

Outreach screenshot
Outreach

Outreach is a sales engagement platform unifying email, calling, social, and meetings. APIs expose prospects,

Outrider

Outrider is an autonomous yard technology company that automates distribution

Outright

Outright is a company surfaced as a portfolio company of uncork-capital and added to the

OutRival

OutRival is a conversational AI platform that deploys AI agents ("Digital Workers" / companions) to handle high-volume customer engagement across voice calls...

Outschool

'Outschool is an education-technology marketplace for live, small-group

Outscraper screenshot
Outscraper

Outscraper provides data scraping and extraction APIs for Google Maps, business data, reviews, and other web data sources. Filter and export company database...

Outset

Outset is an AI-powered qualitative research platform, operated by Parnassus Labs, Inc., that lets enterprise research and product teams run large-scale AI-m...

Outside.in

Outside.in was a hyperlocal news aggregation service that clustered blog posts and local news by geography ("placeblogging"), founded in 2006 and backed by U...

Outsite

Outsite is a coliving and community platform for remote workers, digital

Outsmart

'Outsmart (Outsmart Education) is an early-stage EdTech startup building a consumer,

Outsmart

Outsmart (formerly branded Outsmart College; site joinoutsmart.com, with outsmartcollege.com

Outsmart College

Outsmart (Outsmart Education, Inc.) is an education-technology company rebuilding higher education for the AI era, aiming to make learning smarter, faster, a...

Outtake

'Outtake is an AI-powered digital risk protection (DRP) platform that

Outverse

Outverse is an enterprise "service AI operating system" from Outverse Limited, a UK company backed by Seedcamp and Wing Venture Capital. Its platform lets su...

OvaScience

'OvaScience was a Waltham, Massachusetts biotechnology company founded in 2011 (by Michelle

Ovation screenshot
Ovation

Ovation is an AI-first guest experience and feedback platform for restaurants, founded by Zack Oates and voted the #1 guest feedback platform in a Restaurant...

Over

Overworld is an open-science AI research lab building interactive world models - AI-generated video environments that respond in real time to text prompts an...

OverDrive

OverDrive is a digital reading platform that distributes ebooks, audiobooks, and magazines to public libraries and schools worldwide, best known for its Libb...

Overflow

Overflow is a fintech giving platform for churches and nonprofits that lets organizations accept and reconcile donations across many asset types — card and A...

Overjet

Overjet is a dental AI platform that applies FDA-cleared computer vision

Overland AI

Overland AI is a Seattle- and Washington, DC-based defense technology company building autonomous ground vehicle systems for military and national-security a...

Overlay

Overlay is a decentralized perpetual-futures protocol on BNB Smart Chain (chain id 56) that lets anyone trade and permissionlessly create markets for emergin...

Overops

OverOps (formerly Takipi) is a continuous reliability platform that helps teams who ship software ensure rapid code changes do not degrade the customer exper...

Overpass API screenshot
Overpass API

Overpass API is a read-only OpenStreetMap data API that enables querying geographic features including nodes, ways, relations, and tags using the Overpass Qu...

Overshoot

Overshoot is a real-time video understanding API. Developers create a live video stream,

overshoot.ai

Overshoot is real-time AI vision infrastructure. It ingests live video streams over WebRTC (LiveKit) and lets developers query those frames with vision-langu...

Overstory

Overstory provides AI-powered vegetation intelligence for electric utilities and grid operators. The platform fuses high-resolution satellite and aerial imag...

Overt

'OverT Bio is a clinical-stage biotechnology company developing next-generation,

Overtime

Overtime is a sports media and entertainment company building disruptive,

Overture

'Overture (Overture Life) is a privately held life-sciences company backed by GV and Khosla

Overture Maps Foundation screenshot
Overture Maps Foundation

Overture Maps Foundation is a Linux Foundation collaborative project that produces free, open, and interoperable map data. Overture publishes cloud-native Ge...

Overture Maps Foundation screenshot
Overture Maps Foundation

The Overture Maps Foundation is a Linux Foundation project created in partnership with Meta, Microsoft, AWS, and TomTom to build reliable, open map data as a...

Overview

Overview (overview.ai) builds AI-powered machine vision systems for manufacturing quality control. Its edge-computing platform runs vision transformer models...

Overwolf screenshot
Overwolf

Overwolf enables developers to build lightweight in-game applications and overlays using HTML and JavaScript. The platform provides APIs for game events, gam...

OVH Cloud screenshot
OVH Cloud

OVH Cloud is a leading provider of cloud computing services that offer a wide range of solutions for businesses

OVIA

OVIA is listed via wepow.com, the domain of Wepow, a video-interviewing and candidate-assessment startup backed by 500 Global. Wepow is now part of Harver, a...

Ovia Health

Ovia Health (by Labcorp) is a digital women's and family health platform delivering evidence-based programs, personalized data insights, and Care Team suppor...

Ovintiv screenshot
Ovintiv

Ovintiv is a Fortune 500 oil and natural gas exploration and production company headquartered in Denver, Colorado. The company operates across North America ...

Oviva

'Oviva is a European digital health company, founded in 2014, delivering personalized,

OWASP screenshot
OWASP

The Open Worldwide Application Security Project (OWASP) is a nonprofit foundation that works to improve the security of software through community-led open s...

OWASP API Security Project screenshot
OWASP API Security Project

The OWASP API Security Project focuses on strategies and solutions to understand and mitigate the unique vulnerabilities and security risks of Application Pr...

OWASP ZAP screenshot
OWASP ZAP

OWASP ZAP (Zed Attack Proxy) is an open source web application security scanner for finding vulnerabilities in APIs and web applications during development a...

Owen Wilson Wow

"API for actor Owen Wilson's \"wow\" exclamations in movies"

Owens & Minor screenshot
Owens & Minor

Owens & Minor is a global Fortune 500 healthcare solutions company providing essential products and services to healthcare providers and manufacturers across...

Owens Corning screenshot
Owens Corning

Owens Corning is a global Fortune 500 building and industrial materials leader committed to building a sustainable future through material innovation, provid...

Owens-Illinois (O-I Glass) screenshot
Owens-Illinois (O-I Glass)

Owens-Illinois (now O-I Glass) is one of the world's leading manufacturers of glass containers, supplying glass packaging to the food, beverage, beer, wine, ...

OWKIN

'Owkin is a French-American AI-biotech company (offices in New York, Paris, and London)

Owl Labs

Owl Labs is a Boston-based video conferencing hardware and software company building smart devices for hybrid meetings. Its flagship Meeting Owl line is a 36...

OwlBot

"Definitions with example sentence and photo if available"

Owler

'Owler is a crowdsourced competitive- and business-intelligence platform

Owletcare

Owlet (Owletcare) is a baby-monitoring technology company that builds connected-nursery hardware and companion apps for parents. Its flagship Dream Sock is m...

OWLR

OWLR (OWLR Technologies) is a London- and Fort Lauderdale-based consumer IoT company that builds universal remote-monitoring apps for home IP cameras, lettin...

Own (OwnBackup)

Own (formerly OwnBackup, now Own from Salesforce) is a SaaS data protection platform that provides backup, recovery, archiving, sandbox seeding, and data sec...

Own Up

Own Up is an AI-driven mortgage marketplace that helps borrowers shop for home loans by comparing personalized rate offers from a network of top-rated lender...

OwnBackup screenshot
OwnBackup

OwnBackup (Own Company) is a SaaS data protection platform providing backup, recovery, and sandbox seeding for Salesforce and other cloud applications.

Owner.com

Owner.com is an all-in-one, done-for-you digital platform for

OwnerRez

OwnerRez is vacation-rental and short-term-rental property management

OwnLocal

OwnLocal is an Austin-based automated digital advertising platform for local media companies.

owo screenshot
owo

"A simple link obfuscator/shortener"

Oxen

Oxen.ai is a blazing-fast data version control system and AI platform for teams building with their own data. Its open-source Rust core (liboxen) versions, b...

Oxford screenshot
Oxford

"Dictionary Data"

Oxford Ionics

'Oxford Ionics is a quantum computing hardware company founded in Oxford, UK that

Oxford Science Enterprises

'Oxford Science Enterprises (OSE) is an independent investment company and venture builder

OxfordCaps

OxfordCaps is a company surfaced as a portfolio company of 500-global and added to the API

Oxia screenshot
Oxia

Oxia is a scalable metadata store and coordination service designed for distributed systems, providing strong consistency guarantees and high availability. I...

Oximy

Oximy is an AI adoption and governance platform — "the AI adoption engine for every company." It gives organizations visibility into how their people and app...

OXIO

OXIO is a Telecom-as-a-Service (TaaS) platform that lets brands, enterprises, and fintechs launch and operate their own branded mobile networks (MVNOs) throu...

Oxygen

Oxygen was a US fintech neobank founded in 2018 and a Y Combinator graduate, offering banking,

Oxylabs screenshot
Oxylabs

Oxylabs is a Lithuanian (Vilnius-based) web intelligence platform providing premium proxy networks (Residential, Datacenter, Mobile, ISP, Dedicated), web dat...

Oxyzo

'Oxyzo Financial Services is an RBI-registered Non-Banking Financial Company (NBFC)

Oyi Labs

Oyi Labs is a company surfaced as a portfolio company of bloomberg-beta and added to the

OYO

'OYO (Oravel Stays Limited) is an India-headquartered hospitality company that operates a

Oyo Rooms

OYO Rooms (Oravel Stays / OYO Hotels & Homes) is a hospitality technology company headquartered in Gurugram, India that operates a global chain of franchised...

Oyster HR screenshot
Oyster HR

Global employment platform with a REST API for hiring international employees, managing contracts, processing global payroll, and ensuring local compliance i...

Oyster.com (TripAdvisor)

'Oyster.com is a hotel review and travel-photography website owned by TripAdvisor, known

oyyi

"API for Fake Data, image/video conversion, optimization, pdf optimization and thumbnail generation"

Oze

Oze is an African fintech platform on a mission to help small businesses grow, with a stated vision of building 100 million profitable businesses. Operating ...

Ozlo

Ozlo is a company surfaced as a portfolio company of battery-ventures and added to the API

OZON.ru

OZON is one of Russia's largest e-commerce marketplaces, offering retail across electronics, apparel, groceries, and more, plus its own logistics and fulfill...

Ozow

Ozow (formerly i-Pay) is a South African fintech providing an instant