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 supports the Open Radio Access Network architecture under the Linux Foundation for more interoperable and virtualized mobile network infrastructure. It...
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...
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 (ORNL) is the largest US Department of Energy science and energy laboratory. ORNL provides public data and scientific computing...
Oaktree Capital Group is a global asset management firm specializing in alternative investment strategies including credit, private equity, real assets, and ...
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...
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...
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 Labs builds privacy-preserving data and compute technologies. Its developer platform, Parcel, is a data-governance API for uploading, tokenizing, and c...
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 is an enterprise Non-Human Identity Management (NHIM) and agentic access management platform that discovers, governs, and secures non-human id...
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 is an open authorization framework that enables third-party applications to access user resources without exposing credentials. It provides a secure, t...
OB1 was the venture-backed company that built and stewarded OpenBazaar, a fully decentralized, peer-to-peer marketplace protocol for buying and selling goods...
Object-Oriented Programming (OOP) is a software development paradigm that organizes software design around data, or objects, rather than functions and logic....
ObjectBox is a high-performance, low-footprint, offline-first on-device database with built-in data synchronization and on-device vector search, designed for...
Obligate (formerly FQX) is a Swiss digital-securities infrastructure provider for regulated on-chain debt capital markets. Its AssetOS platform lets companie...
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 builds distributed validator infrastructure for Ethereum, letting a validator be run across multiple independent operators and machines (a Distributed V...
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 is a data-exploration, analysis, and visualization platform that helps data analysts and their cross-functional stakeholders make sense of data. I...
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 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,...
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...
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...
Occidental Petroleum is an international oil and gas exploration and production company with operations in the United States, Middle East, Africa, and Latin ...
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...
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 Network Express (ONE) is a Singapore-headquartered global container liner shipping company formed in 2017 through the integration of the container ship...
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 is a global provider of engineered services and products primarily to the offshore oil and gas industry, with a focus on deepwater ...
Oceans Healthcare is a behavioral health system operating a network of psychiatric hospitals and outpatient programs across the southern United States. Found...
Ocelot is an open-source API Gateway built with .NET for microservices architectures. It provides routing, authentication, rate limiting, load balancing, and...
OCI (Open Container Initiative) is an open governance structure for creating open industry standards around container formats and runtimes. OCI defines stand...
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 (OATH Challenge-Response Algorithm) is a standard for generating one-time passwords based on challenge-response authentication as defined in RFC 6287. I...
Octane AI is an AI-powered quiz and product-recommendation platform for Shopify merchants, turning storefront browsers into buyers with no-code personalized ...
Octant is a precision medicine company developing next-generation small molecule therapeutics by merging biology, chemistry, and computation to engineer drug...
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) is a Y Combinator (Winter 2026) startup applying computer vision and robotics to automate quality inspection in finfish farms. Its AI v...
Octave (Octave Online Therapy) is a modern behavioral and mental health company providing personalized, evidence-based therapy — individual, couples, and fam...
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 (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...
Octoparse is a powerful web scraping tool that allows users to extract data from websites without any coding knowledge. The platform uses advanced algorithms...
Octopus Deploy is a continuous delivery and release orchestration platform for managing deployments across development, test, and production environments to ...
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...
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 is the virtual-reality company founded in 2012 that Kickstarter-launched the Rift headset and was backed by Spark Capital, Matrix Partners and others ...
Ocwen Financial Corporation is a leading non-bank mortgage servicer and originator providing solutions through its primary brands PHH Mortgage and Liberty Re...
Odaseva is an enterprise data security, backup, and governance platform purpose-built for large, complex Salesforce environments. It provides data backup and...
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 is a New York-based creative media technology company that builds speaking-character, avatar, and text-to-speech products for agencies, brands, busin...
Oddpool is an institutional-grade data platform for prediction markets, offering unified access to market data across Kalshi and Polymarket through a single ...
OddsJam's Sports Betting API offers real-time betting odds from 100+ sportsbooks including player props, alternate markets, injury data, schedules, rankings,...
Odeko is a cafe operations platform that keeps independent coffee shops and cafes stocked by combining predictive ordering, overnight supply delivery, and mo...
Odessa is a Philadelphia-headquartered lease and loan management software company founded in 1998 that powers asset finance for banks, captive finance compan...
Odoo is an open-source suite of business applications covering ERP, CRM, eCommerce, accounting, inventory, and more. Odoo provides external APIs for integrat...
Odos is a DEX aggregator and smart order routing platform that uses a sophisticated optimization algorithm to unify fragmented liquidity and maximize the out...
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 is an AI research lab building general-purpose world models — causal, multimodal systems that understand and simulate physical environments, generati...
Odyssey Interactive is an independent game development studio focused on building free-to-play, cross-platform, competitive titles set in bright, hopeful, an...
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...
Oferteo (oferteo.pl) is a Polish online services marketplace that connects people and businesses seeking services (Zlecający) with local contractors and serv...
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 (now operating as "Offchain") is the research-and-engineering company behind Arbitrum, one of the leading Ethereum Layer 2 scaling ecosystems, ...
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 is a comprehensive online platform that provides information about individuals who have been convicted of criminal offenses. The website allows ...
Offenders.io is a technology company that specializes in providing innovative solutions for managing and monitoring offender populations. Their platform util...
OfferFit is an AI decisioning company whose reinforcement-learning platform automated marketing experimentation and 1:1 personalization (replacing manual A/B...
OfferUp is a mobile-first local marketplace where people buy and sell items in their community across categories including electronics, vehicles, furniture, ...
Microsoft Office 365 is a cloud-based suite of productivity and collaboration applications that integrates all Microsoft's existing online applications into ...
Office Depot is a leading provider of business products and services delivering workplace solutions through retail stores, e-commerce sites, and a dedicated ...
OfficeLuv is office management and purchasing software that centralizes all of a workplace's ordering into a single platform. It aggregates dozens of vendors...
The Office of Career, Technical, and Adult Education is a government agency that focuses on providing resources and support to individuals seeking to further...
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...
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...
The Office of Congressional Workplace Rights is responsible for enforcing workplace rights for employees of the United States Congress. This includes oversee...
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...
The Office of Government Ethics (OGE) is an independent agency within the federal government that oversees the behavior and ethics of executive branch employ...
The Office of Inspector General (OIG) conducts audits, investigations, inspections, and other reviews to promote economy and efficiency in government program...
The Office of the Comptroller of the Currency (OCC) is a federal agency responsible for regulating and supervising national banks and federal savings associa...
The Office of the Federal Register is responsible for publishing official government documents. This includes the publication of presidential proclamations, ...
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 is a open data portal open-data portal for Ukraine running CKAN. It exposes the CKAN catalog API, a standardized machine...
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...
OGE Energy is the parent company of Oklahoma Gas and Electric Company, a regulated electric utility serving customers in Oklahoma and western Arkansas.
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 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 ...
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 is a large public land-grant research university in Columbus, Ohio, United States, ranked #208 in the QS World University Rankings 2025...
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 is a residential demand-response and virtual power plant company that turns household electricity flexibility into grid capacity. It alerts custom...
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...
Oil States International is a global oilfield services company that provides specialty products and services to oil and gas drilling and production companies...
OkCredit is a mobile digital ledger (bahi khata) application for small business owners and merchants across India, letting shopkeepers record credit and paym...
Okendo is a customer-marketing platform for ecommerce brands, centered on the Shopify ecosystem, that unifies product reviews and ratings, loyalty programs, ...
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 Inc. is a Santa Clara, California advanced fission company designing and deploying small modular reactors under the Aurora powerhouse brand. The Aurora ...
Okra was an open finance / open banking infrastructure company for Africa, headquartered in Lagos, Nigeria. Its REST APIs let businesses link end users' bank...
Ola is India's leading ride-sharing and mobility platform operating across 100+ cities in India and international markets. Its developer ecosystem includes p...
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 is a regional bank holding company headquartered in Indiana and a Fortune 1000 firm that provides consumer banking, commercial banking, ...
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 is one of the nation's largest publicly held insurance organizations, providing general insurance, title insurance, and life and a...
Olema Oncology is a clinical-stage biopharmaceutical company headquartered in San Francisco with operations in Cambridge, Massachusetts, focused on developin...
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 Corporation is a leading global manufacturer and distributor of chemical products and ammunition. Olin operates three business segments: Chlor Alkali Pr...
Olist is a Brazilian commerce technology company headquartered in Curitiba, Paraná, offering an integrated ecosystem of solutions that automate business mana...
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 is an AI-native vendor evaluation and technology procurement platform that runs the full RFP lifecycle in a single workspace — from requirements manage...
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.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 is a privately held biotechnology company developing novel therapeutics, organizing its work around defined therapeutic areas and a product pipelin...
Olo is a leading on-demand commerce platform powering the digital experience for restaurant brands, serving approximately 750+ enterprise and emerging chains...
OlympusDAO is a decentralized reserve currency protocol built on Ethereum that pioneered protocol-owned liquidity (POL). The Olympus protocol issues OHM, a c...
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 is a virtual-first healthcare company founded in 2011 and headquartered in San Francisco that delivers integrated, evidence-based care programs ...
Omate designs and manufactures Wearable-as-a-Service (WaaS) safety solutions built around cellular-connected smartwatches for people who need protection — se...
Open Movie Database REST API providing movie and TV show metadata, ratings, poster images, and episode data from a community-maintained database. Supports lo...
Omnea is an AI-native procurement platform that automates the full source-to-pay (S2P) process, unifying intake management, strategic sourcing, third-party r...
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 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 (OCP) is a game development platform company founded in 2021 and based in Raleigh, North Carolina, operating fully remote. Its mission ...
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...
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 is a global advertising, marketing, and corporate communications holding company with hundreds of agencies serving clients in more than 100 cou...
Omnifold is an AI supply chain planning platform for physical product companies — CPGs, manufacturers, distributors, and retailers. The company trains a cust...
Omniful is an AI-powered unified supply chain and fulfillment platform that consolidates order management (OMS), warehouse management (WMS), transportation m...
Omnisend is a Lithuanian-headquartered email and SMS marketing automation platform purpose-built for ecommerce, with first-class integrations into Shopify, B...
omni:us (operated by Qidenus Group GmbH, Berlin) is an insurance technology company building agentic AI for claims processing. Its platform automates end-to-...
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 (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 (formerly MFS Africa) is a pan-African digital payments network headquartered in London with operating entities across Mauritius, Ghana, Nigeria, Tan...
Oncimmune is a biotechnology company specializing in antibody and autoantibody biomarker discovery for precision medicine. Its proprietary ImmunoINSIGHTS pla...
Onco.com is a comprehensive cancer care platform operated by Apollo Hospitals Enterprise Ltd that connects cancer patients across India with oncologists and ...
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 is a small business lending platform that provides partner APIs for submitting loan applications, checking business health scores via the OnDeck Score...
'Ondo Finance builds institutional-grade platforms and infrastructure to bring financial markets onchain, tokenizing real-world assets and equities. Its deve...
OneAssist is an Indian consumer protection and services company that provides device and appliance protection, extended warranty, and financial-fraud assista...
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 Degree is a California-based 501(c)(3) nonprofit technology organization that empowers low-income and underserved individuals, families, and social-servi...
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 Model is an HR and people-analytics software platform that unifies fragmented workforce data from HRIS, ATS, payroll, engagement, performance, and financ...
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 is a fully remote game development studio founded by veterans behind titles such as Warcraft, Diablo, StarCraft, and Guild Wars. The team build...
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 Exchange B.V.) is an EU-regulated cryptocurrency and derivatives exchange for retail and institutional traders, positioning itself a...
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...
Onebrief is a defense-technology company building a unified command workspace for military planning, decision-making, and staff collaboration. The web-based ...
OneBusAway is an open-source real-time transit information platform managed by the Open Transit Software Foundation. It provides transit riders with real-tim...
OneChronos operates AI-powered "Smart Market" alternative trading systems that match institutional orders using Nobel Prize-winning combinatorial auction tec...
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...
Onefinestay is a British luxury hospitality company founded in 2009 that curates and manages a portfolio of upmarket private homes, villas, apartments and ch...
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 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 is a managed integration service provider delivering IntegrationOps as a Service, providing cloud-based, automation-led integrations for enterprise IT ...
OneKey is a self-custody crypto wallet company — "Self Custody. Open Source. Fully Onchain." It builds open-source hardware wallets (OneKey Pro, Classic 1S, ...
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 is a leading provider of personal installment loans to nonprime consumers in the United States, with branches across multiple states. No pub...
ONEOK is a Fortune 500 energy company providing midstream services to natural gas and natural gas liquids producers, processors, and customers. This reposito...
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.ai) is a San Francisco-based startup building an AI-powered, fully automated custom synthesis platform for small-molecule drug discovery. It c...
Onera, Inc. was a San Francisco-based retail technology company that built a real-time inventory availability and omnichannel order fulfillment platform. Its...
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 Software provides core insurance platform solutions for property and casualty (P&C) insurers, managing general agents (MGAs), program administrator...
OneShot (oneshot.ai) is an autonomous outbound sales prospecting platform that uses generative AI, machine learning, and reinforcement learning to automate t...
OneStream is an enterprise finance platform that unifies financial and operational data into a single source of truth, spanning financial close and consolida...
OneUptime is an open source observability platform combining monitoring, incident management, status pages, and on-call scheduling in one OpenTelemetry-nativ...
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 Systems, founded in 2012 and headquartered in Fresno, California, was an agriculture IoT data-integration company that offered a customizable dashboar...
Onfido is a global identity verification and authentication company that helps businesses verify the identities of their customers. Using advanced technology...
OnFrontiers is the first and largest expert network for U.S. federal contractors, an Expertise Intelligence Platform connecting government contractors with 1...
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 is a privately held surgical oncology company founded in 2015 and headquartered in Parsippany, New Jersey, focused on innovative solutions for...
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 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 is one of India's largest online exam-preparation platforms, built by Next Door Learning Solutions Private Limited (Jaipur, Rajasthan) and acquir...
OnMyGrad is a Hong Kong-based campus-recruitment and career-learning SaaS platform that helps employers connect with university talent across Southeast Asia ...
OnPlan (onplan.co) publishes guidance and content on project controls, budgeting, and forecasting for organizations managing projects and capital programs. T...
Onramp Payments, Inc. (ONRAMP) is a fintech company building modern payments infrastructure for the commercial trucking and fleet industry. Founded by logist...
ON Semiconductor (now branded as onsemi) is a global supplier of semiconductor-based solutions for power efficiency, image sensing, and signal processing in ...
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 is a global technology provider and UK/EU insurance intermediary that delivers flexible, shift-linked worker benefits — on-demand ("Embedded") pay, insu...
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 is a digital stationing platform for road and highway construction projects, replacing paper station logs and manual chaining with GPS-based field ...
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 is a corporate and physical security management software company based in Austin, Texas, that unifies protective intelligence, executive protection, in...
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 is an AI-powered contract automation and digital execution platform for private markets. It automates routine legal and compliance workflows for invest...
Ontraport is a business automation platform combining CRM, marketing automation, email marketing, landing pages, ecommerce, and membership site capabilities ...
Ontruck is a Spanish road-freight technology platform that connects shippers (cargadores) with a network of professional carriers (transportistas) for full-t...
Onward Delivery is a Denver, Colorado final-mile logistics platform, backed by Techstars, that specializes in "big and bulky" deliveries by smart-matching sh...
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 is an applied AI research lab building the data infrastructure for frontier AI. It turns real company data into reinforcement-learning environments...
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...
Opal is a marketing planning and content calendar platform that gives marketing teams a single visual workspace to plan campaigns, build editorial and conten...
Opalite Health is building the language layer for healthcare. Its platform delivers real-time, AI-powered medical interpretation across 150+ languages, valid...
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...
Open is one of India's leading SMB neobanks, pioneering "connected banking" - a unified business finance platform that layers payments, automated reconciliat...
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 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 is the global public registry of electric vehicle charging locations, established in 2011 as a non-commercial, community-driven project. The ...
The Open Container Initiative (OCI) is an open governance structure for creating open industry standards around container formats and runtimes, hosted under ...
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 is a state government open-data portal for Germany running CKAN. It exposes the CKAN catalog API, a standardized machine-readabl...
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 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 is a organization open-data portal for Cambodia running CKAN. It exposes the CKAN catalog API, a standardized machine-readable inte...
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 is a organization open-data portal for Myanmar running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interf...
Open Development Vietnam is a organization open-data portal for Vietnam running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interf...
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 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 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 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 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 is an API-first, headless loyalty and gamification platform. Every loyalty mechanic - members, transactions, points, tiers/levels, earning rules...
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 is a nonprofit, community-driven initiative that develops open standards and open-source software for making patient-generated health data inter...
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...
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 (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 (OpenPort) is a pan-Asian logistics and supply chain technology company that digitizes trucking, freight, and supply chain operations ac...
The Open Programmable Infrastructure (OPI) project is a Linux Foundation initiative demonstrating real-world use cases for offloading key infrastructure mana...
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 Souls is an open-source framework and philosophy for building "AI souls" — agentic, embodied digital beings with personality, drive, and ego, built on t...
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...
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 ...
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 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 is an open-source weather API that provides free global weather forecasts, historical reanalysis data, marine conditions, air quality indexes, and...
Collection of OpenAI's artificial intelligence APIs for natural language processing, image generation, speech, and embeddings including Chat Completions, Com...
OpenAPI (formerly Swagger Specification) is a standard, language-agnostic specification for describing RESTful APIs in a machine-readable format. It enables ...
OpenAPI Generator is an open-source tool that generates client libraries, server stubs, API documentation, and configuration automatically given an OpenAPI S...
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 is an open source tool that generates TypeScript API clients from OpenAPI specifications, producing lightweight, fully typed clien...
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 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 ...
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 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 is a Linux Foundation project producing an open source implementation of baseboard management controller firmware. Founded by Microsoft, Intel, IBM, ...
OpenCart is a free, open-source eCommerce platform providing a REST API for managing products, categories, orders, customers, returns, and store configuratio...
OpenChain is an international standard (ISO/IEC 5230) under the Linux Foundation for open source license compliance programs. It helps organizations manage o...
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 is the world's largest open database of companies, providing a REST API for searching and retrieving company registration data, officer inform...
An open source CNCF specification and reference implementation for real-time cost monitoring of Kubernetes infrastructure and cloud spending, enabling teams ...
OpenCurriculum is a nonprofit education-technology organization (a Y Combinator alum) that builds curriculum-planning software for K-12 schools. Its web appl...
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 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 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
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 (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 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) is a regional government open-data portal for United Kingdom running CKAN. It exposes the CKAN catalog API, a standardized mach...
Open data platform with REST APIs for accessing public datasets from 1,000+ cities and organizations, providing standard OData and JSON query interfaces. Now...
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...
OpenEBS is a popular and widely deployed open source Container Native Storage platform for stateful persistent applications on Kubernetes. It provides dynami...
Openet was an Irish telecommunications software company (headquartered in Dublin) that built real-time business support systems (BSS) for mobile network oper...
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 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 is the U.S. Food and Drug Administration's public data platform, providing Elasticsearch-backed REST APIs serving FDA-administered data on drugs, med...
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...
OpenFGA is a CNCF incubating high-performance authorization system implementing fine-grained access control based on the Zanzibar model. It provides a flexib...
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 — now branded HERE — is the operating-system layer for enterprise financial desktops. Its container/runtime lets web applications run as secure, inte...
OpenGamma is a derivatives and margin analytics company whose technology helps trading, risk, treasury and operations teams forecast, stress test, simulate a...
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...
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 (Open Insurance Data Link) is a Linux Foundation project developing standardized, interoperable data frameworks for the insurance industry. It uses b...
The OpenInfra Foundation, which recently joined the Linux Foundation, is home to open infrastructure projects including OpenStack, Kata Containers, StarlingX...
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 SDS is an open-source, software-defined object storage platform for building hyper-scalable, high-performance storage infrastructures. It stores data ...
The OpenJS Foundation is a Linux Foundation project that supports the growth of JavaScript and web technologies through open governance and collaboration. It...
OpenKruise is a CNCF incubating project providing advanced workload management and deployment automation for Kubernetes. It extends Kubernetes with enhanced ...
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 is a Public Benefit Corporation that provides programmatic access to U.S. law text — federal and state statutes, regulations, constitutions, and cas...
OpenLDAP is an open source implementation of the Lightweight Directory Access Protocol (LDAP) that provides directory server daemons, client libraries, and u...
OpenLight Photonics is a silicon photonics company that designs and manufactures custom Photonic Application-Specific Integrated Circuits (PASICs) using a he...
OpenLoop Health is a Des Moines, Iowa-based white-label telehealth infrastructure company that powers virtual care for digital health companies, health plans...
Openly is an independent agent home insurance platform founded in 2017 and headquartered in Boston, Massachusetts. The company provides REST APIs for generat...
OpenMenu provides structured menu data and menu publishing for restaurants, built on the open OpenMenu Format specification. Its public REST API helps develo...
OpenMercantil is an independent public-data API for Spanish company intelligence. It indexes the Boletin Oficial del Registro Mercantil (BORME) and cross-ref...
OpenMetadata is an open-source data catalog and metadata platform providing a comprehensive REST API for managing tables, dashboards, pipelines, data quality...
OpenMind builds open-source software that makes robots useful. Its flagship product, OM1, is a modular AI Hardware Abstraction Layer (HAL) and agent runtime ...
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 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...
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 is an open source product analytics platform that provides event tracking, user journey analysis, real-time dashboards, and funnel analysis, offeri...
Openpath is a cloud-based, mobile-first access control platform for the modern workplace — touchless entry, door/reader/relay hardware (ACUs), user and crede...
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 is a fine-tuning and inference platform for distilling expensive frontier-LLM workloads into smaller, cheaper specialized models. Captures productio...
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...
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 is an open source project management platform offering work package tracking, Gantt charts, agile boards, time tracking, BIM, and enterprise proj...
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 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, ...
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 is an open source session replay and product analytics platform that helps developers debug web applications by recording and replaying user sessi...
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 is an API platform that provides unified access to multiple AI language models through a single interface. OpenRouter acts as a "router" or gatewa...
Opensense (formerly SenderGen) is an email signature management platform that centrally governs email signatures, banners, and digital business cards across ...
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 ...
OpenSpace is a visual intelligence platform for the construction industry, headquartered at 333 Kearny Street, San Francisco, California. The company pairs a...
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 is a two-sided sports sponsorship and influencer marketing marketplace that connects brands with a network of more than 25,000 professional a...
The Open Source Security Foundation (OpenSSF) is a collaborative initiative under the Linux Foundation dedicated to improving the security of open source sof...
Open source cloud computing platform for building and managing public and private clouds, providing infrastructure as a service (IaaS) through a set of inter...
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 (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 ...
Vendor-neutral open-source observability framework for cloud-native software, providing a collection of tools, APIs, and SDKs for instrumenting, generating, ...
Open-source infrastructure as code tool forked from Terraform, providing a community-driven alternative for provisioning and managing cloud infrastructure us...
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 is an institutional-grade platform for stablecoin lending and yield products, enabling fintechs, neobanks, crypto exchanges, custodians, stablecoin...
OpenTripMap provides a travel points of interest REST API with access to over 10 million POIs worldwide including attractions, restaurants, hotels, museums, ...
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 provides a global real-time UV index API. The service combines meteorological inputs (ozone, cloud cover, area reflection) with NASA satellite sources...
Openverse is a search engine providing programmatic access to the world's largest openly-licensed media catalog, covering 800M+ images and audio tracks from ...
OpenVPN is a secure networking company providing VPN and Zero Trust network access solutions for over 20,000 organizations worldwide, offering both the self-...
The OpenWallet Foundation is a Linux Foundation Europe project that brings developers and standards organizations together to facilitate global interoperabil...
OpenWeather is a data platform that provides accurate and reliable weather information to individuals, businesses, and organizations around the world. They g...
OpenWeb (formerly Spot.IM) is a community and audience-engagement platform for publishers, delivering OpenWebOS — a unified, end-to-end suite for building co...
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 is an independent supply-side platform (SSP) and programmatic ad exchange headquartered in Pasadena, California, founded in 2008. OpenX connects publis...
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 is a Web3 security platform providing tools for secure smart contract development, deployment, monitoring, and automation. The platform includes...
Oper Credits is a Belgian digital mortgage origination platform (Brussels, founded 2019) that lets banks, lenders, insurers, and brokers offer and process en...
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 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 AI is a San Francisco-based runtime security company (founded 2021, backed by Felicis) that protects cloud and AI applications with real-time, Kubern...
API for managing and accessing operation support equipment data, inventory, maintenance records, and deployment information for operational logistics and equ...
The Operator Framework is a CNCF incubating toolkit for building and managing Kubernetes Operators. It includes the Operator SDK for scaffolding and building...
Opereit is a Barcelona-based logistics technology company building AI agents that audit, claim, and recover logistics costs autonomously. Its agents detect c...
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 is a telehealth company delivering online treatment for opioid use disorder (OUD) through medication-assisted treatment (MAT). Founded in 2020 and ba...
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 is an open-source LLM evaluation, testing, and tracing platform developed by Comet ML that enables developers to debug, evaluate, and monitor LLM applic...
OPNsense is an open source FreeBSD-based firewall and routing platform providing stateful packet filtering, VPN (IPsec, OpenVPN, WireGuard), intrusion detect...
Opower is a customer engagement and energy efficiency cloud platform for utilities, now delivered as Oracle Utilities Opower after Oracle acquired the compan...
Opply is a supply chain operations platform for food and beverage brands that automates ingredient and packaging sourcing, ordering, logistics, and supplier ...
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 is an AI-powered unified DevOps platform that helps enterprise software teams orchestrate the full software delivery lifecycle from a single control p...
OPSI Slovenia is a national government open-data portal for Slovenia running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interface...
OpsMill is the company behind Infrahub, an open-source, graph-based infrastructure data management platform that unifies a source of truth for network, data ...
Opterrix delivers real-time and historical weather and natural hazard intelligence to inform and automate key decision-making throughout the insurance value ...
Opti is an AI-native identity and access management (IAM) platform for enterprises struggling with access sprawl across human, non-human, and agentic identit...
Optic is an open source tool for OpenAPI linting, diffing, and testing that helps prevent breaking changes, publish accurate documentation, and improve API d...
OpticOdds Sports Betting API offers real-time betting odds for main lines, player props, alternate markets, injury data, schedules, ranking, scores and more ...
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 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 is a health and rewards platform (myoptimity.com) that helps millions of members live healthier, wealthier, and longer through gamified micro-learni...
Optimizely is a digital experience platform that provides A/B testing, feature flagging, content management, and commerce solutions for enterprises. Their de...
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 is an autonomous-robotics company building a vertically integrated fleet of advanced robots for the toughest, most extreme environments across con...
Optimyze (Optimyze.cloud Inc.) was a Zurich, Switzerland based continuous-profiling startup, seeded by Andreessen Horowitz (a16z) in 2020, and the maker of P...
Optivolt Labs (operating as Optivolt) is a Burlingame, California solar technology company building intelligent home solar systems with power electronics emb...
Optiwatt is a consumer-centric energy management platform that helps electric-vehicle drivers and homeowners lower their electricity bills by automatically s...
Opto (Opto Investments) is an end-to-end private markets investment platform built for wealth managers - RIAs, family offices, and private banks. The platfor...
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...
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 (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...
Oracle Application Express (APEX) is a low-code development platform that enables you to build scalable, secure enterprise apps with world-class features.
Oracle Container Engine for Kubernetes (OKE) is a managed Kubernetes service that simplifies the deployment, management, and scaling of containerized applica...
Oracle Database 19c is a multi-model database management system that provides a comprehensive platform for enterprise data management, analytics, and applica...
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 is a marketing automation platform that provides tools for lead management, email marketing, and marketing campaign management through comprehe...
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 (OEM) provides a comprehensive management platform for managing Oracle IT infrastructure and applications. The APIs enable programm...
Oracle Essbase is a multi-dimensional database management system that provides a multidimensional analytical platform for business intelligence applications,...
Oracle Fusion Cloud Applications represent a comprehensive suite of cloud-based enterprise resource planning (ERP), human capital management (HCM), customer ...
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 is a comprehensive platform that leverages advanced analytics and artificial intelligence to provide actionable insights and ...
Oracle Partitioning enables tables and indexes to be partitioned into smaller, more manageable pieces, improving performance, availability, and manageability...
A collection of APIs for Oracle Planning and Budgeting Cloud Service (PBCS) and Enterprise Performance Management (EPM) Planning. Oracle EPM Cloud provides R...
Oracle Primavera is a portfolio of project portfolio management (PPM) applications for construction, engineering, and capital project industries. Primavera A...
Oracle Retail is a suite of cloud and on-premises applications for retailers spanning merchandising, pricing, supply chain, omnichannel order management, poi...
Oracle Siebel CRM APIs provide programmatic access to customer relationship management functionality including sales, marketing, and service automation capab...
Oracle Transportation Management (OTM) is a logistics platform delivered as part of Oracle Fusion Cloud Transportation and Global Trade Management. OTM 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 is an AI-native, cloud-based core banking platform that helps banks, lenders, microfinance institutions, and fintechs in Asia, Africa, and Europe rep...
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...
Orange Developer offers a portfolio of network, communication, identity, location, payment, IoT, and cloud APIs that allow developers to build new customer e...
Orange Health Labs is an Indian at-home diagnostics laboratory serving Bengaluru, Delhi, Gurgaon, Noida and Hyderabad, offering 60-minute home sample collect...
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...
Orbii is a Riyadh-based credit infrastructure company providing AI-powered underwriting and lending infrastructure for banks, fintechs, neobanks, and B2B pla...
Orbii is a MENA-region credit and lending infrastructure company. Its API turns raw business financial data - bank transactions and invoices - into automated...
Developer relations and community intelligence platform with a REST API for tracking member activities, measuring community growth, and managing developer ad...
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 is a data gateway and integration platform that connects APIs, databases, event streams, and other data sources without requiring glue code or manual...
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 was a Palo Alto, California geospatial analytics company founded in 2013 by James Crawford (formerly Bell Labs, Google Books, and NASA's Mars...
Orbital Therapeutics was a Cambridge, Massachusetts biotechnology company developing next-generation RNA medicines, combining circular and linear RNA, target...
Orby AI is an enterprise generative process automation company that uses Large Action Models, neuro-symbolic reasoning, and agentic process discovery to obse...
Orca is the leading user-friendly concentrated-liquidity automated market maker (AMM) on Solana, built around Whirlpools. Liquidity providers concentrate cap...
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 Robotics (Orchard AI, "The AI Farming Company") is an agricultural technology startup founded in 2022 that builds AI-powered camera systems and farm-...
Orchestra is an agentic operations platform for drug development and life sciences R&D organizations. The software helps biotech and pharmaceutical teams uni...
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 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 provides a persistent digital identifier (an ORCID iD) that you own and control, and that distinguishes you from every other researcher. ORCID provides...
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...
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...
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 is an omnichain, orderbook-based trading infrastructure that provides perpetual-futures liquidity for decentralized exchanges and builders. I...
Ordermark is a restaurant technology company that consolidates online food delivery and takeout orders from third-party channels such as DoorDash, Uber Eats,...
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...
Ordway is a billing and revenue automation platform providing REST APIs for managing subscriptions, invoicing, payments, revenue recognition, and financial r...
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...
Origami Robotics is a Y Combinator (Winter 2026) hardware startup based in Millbrae, California building advanced robotic hands designed specifically for mac...
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...
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 is a collaborative, AI-native analytics platform built by Gravity (bygravity.com) that connects directly to your data warehouse — Snowflake,...
Orion Health is a global healthcare technology company that provides health information technology solutions, including population health management, health ...
Ornadyne is a Los Angeles hard-tech startup building autonomous flapping-wing UAVs (ornithopters) that look and fly like real birds for covert reconnaissance...
ORO Labs provides an agentic procurement orchestration platform for enterprise spend management. It coordinates people, processes, systems, and data so emplo...
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...
Orum is a payments infrastructure company that lets businesses move money and verify bank accounts through a single unified API. Its Deliver product provides...
Orval is an open source tool that generates TypeScript API clients, React Query hooks, Angular services, and mock service workers from OpenAPI specifications...
Ory is an open source identity infrastructure platform providing OAuth2 and OpenID Connect (Hydra), identity and user management (Kratos), permissions and au...
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 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 is a technology-driven health insurance company offering individual, small group, and Medicare Advantage plans. It uses software, member-facing ...
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 ...
Occupational Safety and Health Administration - U.S. federal agency responsible for setting and enforcing workplace safety and health standards. OSHA provide...
Oshkosh Corporation is a Fortune 500 industrial company that designs and builds purpose-built vehicles and vehicle bodies, including access equipment, defens...
OSIsoft PI System is a real-time data management platform used by industrial organizations to capture, analyze, and visualize operational data from sensors, ...
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 is a Y Combinator (Summer 2026) startup building an AI-powered business development platform for corporate law firm partners. Its agents monitor the ...
Osmind is an interventional psychiatry platform that powers what it describes as the largest network of interventional psychiatry practices in the United Sta...
Osmos is an AI-powered data ingestion and data onboarding platform that helps companies import, clean, transform, and validate data arriving from customers, ...
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 is an authorization-as-a-service platform that provides a REST API for defining and enforcing relationship-based access control policies. It enable...
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 is a bioengineering company developing off-the-shelf cell therapies manufactured from stem cells recovered from deceased organ and tissue donor...
Ossus builds AI-native intelligence for cultural institutions, starting with libraries. Its flagship product is Ossus ILS, a modern integrated library system...
Ostium is a decentralized perpetual-futures exchange that lets traders access global real-world-asset markets — stocks, ETFs, commodities, indices, forex and...
Ostra Security is a managed security services provider (MSSP) that delivers enterprise-grade cybersecurity as an outcome-focused, fully managed service under...
Ostrom is a fully digital green-energy provider based in Berlin, Germany, offering variable, fixed, and dynamic electricity tariffs managed entirely through ...
Osyva is a B2B commerce and procurement platform for the veterinary supply sector in Colombia and Latin America ("Gestiona tus compras veterinarias"), connec...
Otis Worldwide is the world's leading manufacturer, installer, and servicer of elevators, escalators, and moving walkways, serving customers in more than 200...
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 operates a connected-vehicle data platform that aggregates, normalizes and delivers telematics and mobility data from millions of connected cars to f...
Otrafy is an AI-powered supplier management platform that automates regulatory compliance, supplier data collection, and supply chain risk assessment for QA,...
Open Cannabis Data for Your Technology. Otreeba comes from the word "abierto" which means "open." Otreeba offers standardized cannabis data and normalization...
Otter (TryOtter) is a Restaurant Operating System used by hundreds of thousands of restaurants worldwide to aggregate delivery and online orders, consolidate...
Otter.ai is an AI-powered meeting transcription and conversational intelligence platform that automatically records, transcribes, and summarizes meetings acr...
Otterize is an open-source, Kubernetes-native platform for intent-based access control (IBAC). Application teams declare which services need to talk to which...
Ottonova is a Munich-based digital private health insurance provider (private Krankenversicherung) founded in 2015, positioned as "the insurance for the mobi...
Oula is a modern maternity and women's healthcare provider offering collaborative pregnancy, gynecology, preconception, and miscarriage care across New York ...
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 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 is a direct-to-consumer kitchenware and cookware brand, best known for the multi-purpose Always Pan, selling cookware, bakeware, appliances, tablew...
OurAirports is an open airport data platform maintained by a global community of aviation enthusiasts. It provides a comprehensive, community-maintained data...
OurHealthMate was an Indian digital health-tech startup (a 500 Global / 500 Startups portfolio company) that let non-resident Indians book medical appointmen...
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 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...
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 was a U.S. company specializing in automated retail with brands including Coinstar coin-counting kiosks and Redbox movie rental kiosks before being...
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 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 refers to risk management tools and services used in French-speaking business and regulatory environments, covering risk assess...
Outils de Tarification refers to pricing and tarification tools used in French-speaking business environments for managing pricing, tariffs, and cost calcula...
Outlier is a consumer online-education company that delivers college-level, for-credit courses (Calculus, Psychology, Financial Accounting, Computer Science,...
Outline is an open-source team knowledge base and wiki with a fully featured RPC-style REST API for programmatically managing documents, collections, teams, ...
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 builds frontier AI foundation models for the human microbiome. Its "lab-in-the-loop" platform pairs high-throughput wet-lab experiments with mach...
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...
OutRival is a conversational AI platform that deploys AI agents ("Digital Workers" / companions) to handle high-volume customer engagement across voice calls...
Outscraper provides data scraping and extraction APIs for Google Maps, business data, reviews, and other web data sources. Filter and export company database...
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 was a hyperlocal news aggregation service that clustered blog posts and local news by geography ("placeblogging"), founded in 2006 and backed by U...
Outsmart (Outsmart Education, Inc.) is an education-technology company rebuilding higher education for the AI era, aiming to make learning smarter, faster, a...
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...
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...
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 is a digital reading platform that distributes ebooks, audiobooks, and magazines to public libraries and schools worldwide, best known for its Libb...
Overflow is a fintech giving platform for churches and nonprofits that lets organizations accept and reconcile donations across many asset types — card and A...
Overland AI is a Seattle- and Washington, DC-based defense technology company building autonomous ground vehicle systems for military and national-security a...
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 (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 is a read-only OpenStreetMap data API that enables querying geographic features including nodes, ways, relations, and tags using the Overpass Qu...
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 provides AI-powered vegetation intelligence for electric utilities and grid operators. The platform fuses high-resolution satellite and aerial imag...
Overture Maps Foundation is a Linux Foundation collaborative project that produces free, open, and interoperable map data. Overture publishes cloud-native Ge...
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...
Overwolf enables developers to build lightweight in-game applications and overlays using HTML and JavaScript. The platform provides APIs for game events, gam...
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 (by Labcorp) is a digital women's and family health platform delivering evidence-based programs, personalized data insights, and Care Team suppor...
Ovintiv is a Fortune 500 oil and natural gas exploration and production company headquartered in Denver, Colorado. The company operates across North America ...
The Open Worldwide Application Security Project (OWASP) is a nonprofit foundation that works to improve the security of software through community-led open s...
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 (Zed Attack Proxy) is an open source web application security scanner for finding vulnerabilities in APIs and web applications during development a...
Owens & Minor is a global Fortune 500 healthcare solutions company providing essential products and services to healthcare providers and manufacturers across...
Owens Corning is a global Fortune 500 building and industrial materials leader committed to building a sustainable future through material innovation, provid...
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, ...
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...
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 Technologies) is a London- and Fort Lauderdale-based consumer IoT company that builds universal remote-monitoring apps for home IP cameras, lettin...
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 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 (Own Company) is a SaaS data protection platform providing backup, recovery, and sandbox seeding for Salesforce and other cloud applications.
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...
Oxia is a scalable metadata store and coordination service designed for distributed systems, providing strong consistency guarantees and high availability. I...
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 is a Telecom-as-a-Service (TaaS) platform that lets brands, enterprises, and fintechs launch and operate their own branded mobile networks (MVNOs) throu...
Oxylabs is a Lithuanian (Vilnius-based) web intelligence platform providing premium proxy networks (Residential, Datacenter, Mobile, ISP, Dedicated), web dat...
OYO Rooms (Oravel Stays / OYO Hotels & Homes) is a hospitality technology company headquartered in Gurugram, India that operates a global chain of franchised...
Global employment platform with a REST API for hiring international employees, managing contracts, processing global payroll, and ensuring local compliance i...
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 ...
OZON is one of Russia's largest e-commerce marketplaces, offering retail across electronics, apparel, groceries, and more, plus its own logistics and fulfill...