Companies - R

R

R is a free, open-source programming language and statistical computing environment maintained by the R Core Team and supported by the R Foundation. It provi...

R&G / Nors Group

'R&G / Nors Group is a company surfaced as a portfolio company of idg-capital and added to

R1 RCM

R1 RCM is a major US corporation and Fortune 1000 company. The R1 RCM API provides programmatic access to its platform services, data, and integrations for e...

R2

R2 is an embedded finance platform operating across Latin America (Mexico, Brazil, Chile, Colombia and Peru) that lets digital platforms and marketplaces off...

Rabbet

Rabbet (Renovate Simply, Inc.) is an Austin-based construction finance software company backed by QED Investors. It provides two products: a platform for rea...

Rabbit

Rabbit Inc. is a consumer technology company building AI-powered devices, best known for the Rabbit R1, a $199 handheld AI companion with industrial design b...

Rabbit

Rabbit is the maker of the R1, a $199 handheld AI device running rabbitOS 2.1 with no subscription required. The R1 ships with Magic Recorder (unlimited reco...

Rabbit Mobility

'Rabbit Mobility (Rabbit) is a clean-tech micro-mobility sharing company

RabbitMQ

RabbitMQ is a widely deployed open source message broker. It supports multiple messaging protocols and can be deployed in distributed and federated configura...

Rabobank

Rabobank is a Dutch multinational banking and financial services company organized as a cooperative with a strong focus on the food and agriculture sector. I...

Rabobank Australia

Rabobank Australia is the Australian arm of Rabobank Group, the Netherlands-headquartered

rabot.energy

'rabot.energy (RABOT Energy DE GmbH) is a Hamburg-based German electricity supplier

Race Entry

This API was designed specifically for the Director software to allow certain timers and directors integration into our Race Entry data with the Director. It...

RACE Protocol

RACE Protocol is a multi-chain, on-chain infrastructure for developing and deploying secure and fair web3 games. It is delivered primarily through a TypeScri...

RACE RESULT

The RACE RESULT REST interface allows retrieval of data from systems uploading to RACE RESULT servers, including RACE RESULT decoders that upload via TCP and...

Rachio

Rachio makes smart, WiFi-connected irrigation controllers, Smart Hose Timers and lighting controllers for homes and landscapes. The Rachio Public API lets de...

RACI

A responsibility assignment matrix that defines roles and responsibilities using four key designations - Responsible (those who do the work), Accountable (th...

Racing Data

Racing Data is a developer-focused API providing real-time updates and historical statistics across racing series, including Formula One, IndyCar, and others...

RacingHub

"Formula 1 historical data and statistics"

Rackspace Technology

Rackspace Technology is a multicloud solutions provider offering managed services, professional services, and

RACQ Bank

RACQ Bank is the retail banking division of RACQ (The Royal Automobile

Rad AI

Rad AI is a San Francisco based healthcare technology company that builds generative and machine-learning software for radiology. Its products help radiologi...

Rad.

Rad TV (Rad.) is a two-sided subscription video platform connecting content creators with consumers. For creators it offers AI-powered content enhancement to...

Radar

Use Radar APIs as building blocks for location-based products and services like pickup and delivery tracking, location-triggered notifications, location veri...

Radar

Radar is a geofencing and maps platform that gives developers a unified

Radd Pharmaceuticals

Radd Pharmaceuticals is a company surfaced as a portfolio company of canaan-partners and

Radial

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

Radial Analytics

'Radial Analytics (Radial) is a Concord, Massachusetts healthcare technology

Radian Group

Radian Group Inc. (NYSE: RDN) is a global, multi-line specialty insurer providing private mortgage insurance through Radian Guaranty and specialty insurance ...

Radiant

Radiant is a nuclear technology company developing portable, transportable microreactors

Radiant Entertainment

Radiant Entertainment was an independent video game studio co-founded by brothers Tom and Tony Cannon, who also created the Evolution Championship Series (EV...

Radiant Nuclear

Radiant Nuclear is a company surfaced as a portfolio company of a16z and added to the API

Radiant Security

Radiant Security is an AI-powered Security Operations Center (SOC) platform that automates alert triage, investigation, and response so security teams can sc...

RadiantGraph

'RadiantGraph is a healthcare engagement platform that turns fragmented health data into

Radiantnuclear

Radiantnuclear is a company surfaced as a portfolio company of felicis and added to the API

Radical Health

Radical Health is a Khosla Ventures-backed healthcare AI company that produces personalized, expert-reviewed cancer treatment reports for patients in the Uni...

Radical Numerics

'Radical Numerics is an AI research lab building what it calls "general

Radicle

Radicle is a sovereign, peer-to-peer code collaboration stack built on Git, developed by Radicle (radicle.dev) and backed by Electric Capital. Instead of rel...

Radio Browser

Radio Browser is a free, community-driven directory of internet radio stations. The project publishes a public REST API exposing the full catalog of stations...

Radio Cult

Are you looking to power your online radio stations website with the Radio Cult API? If so, you're in the right place.

Radio Mast

The Radio Mast API allows you to integrate Radio Mast functionality into your app or website, including streaming network management, stream monitoring, list...

Radio Station Pro

Radio Station Pro is a WordPress plugin for managing online radio stations, schedules, DJs, shows, and playlists. No public REST API has been published by th...

Radio.co

Your toolset for creating bespoke players. Showcase your station to fit your website, apps, and beyond.

Radiology Partners

'Radiology Partners is a national radiology practice based in Austin, Texas that partners

Radionetics Oncology

Radionetics Oncology is a clinical-stage biotechnology company developing precision radiopharmaceutical

Radionomy (Azerion)

'Radionomy (Azerion) is a company surfaced as a portfolio company of bain-capital-ventures

Radish Health

Radish Health is a healthcare company that provides employers with a modern employee health benefit, pairing each member with a dedicated care team and physi...

Radius

Application platform for cloud-native applications that enables developers to define, deploy, and manage applications across multiple clouds and on-premises ...

RadixArk

RadixArk is a deep-tech AI-infrastructure company on a mission to make frontier-level AI infrastructure open and accessible to everyone ("Build AI for all")....

RADNET

RadNet, Inc. (NASDAQ: RDNT) is the largest provider of freestanding, fixed-site outpatient diagnostic imaging services in the United States, operating roughl...

Raenest

'Raenest (formerly Geegpay) is a global money platform for freelancers,

Rafay Product Documentation

Rafay product documentation, API references, Kubernetes platform guides, and resources covering the Rafay Kubernetes Operations Platform (KOP), GPU PaaS, AI ...

Raft

Raft is a consensus algorithm for distributed systems designed to be understandable and provide the same guarantees as Paxos, used for distributed log replic...

Ragas

Ragas is an open-source Python evaluation framework for LLM and RAG (retrieval-augmented generation) applications. It provides metrics, experiments, dataset ...

Ragas

Ragas is an open-source evaluation toolkit for Large Language Model applications, with particular depth on Retrieval Augmented Generation (RAG) and agentic s...

Ragie

Ragie is a fully-managed Retrieval-Augmented Generation (RAG) as-a-service

Raid AI

Raid AI (RAID AI, Inc.) is an enterprise-grade deepfake and AI-content forensics platform covering audio, image, document, and video. Its REST API detects AI...

Raid Base

Raid Base Inc. is a Los Angeles-based game development studio, founded in 2020, building an open-world,

Raider

"Provides detailed character and guild rankings for Raiding and Mythic+ content in World of Warcraft"

Railinc

Railinc, a wholly owned subsidiary of the Association of American Railroads, delivers IT and information services to the North American freight rail industry...

Railway

The Railway public API is built with GraphQL and is the same API that powers the Railway dashboard, providing automation for projects, services, deployments,...

Railway

Railway is a cloud application deployment platform (PaaS) that builds,

Railway Transport for France

"SNCF public API"

Rain

Rain is an enterprise stablecoin payments platform that lets companies embed digital-dollar

Rain (Raincards)

Rain is a stablecoin payments infrastructure company that lets platforms, fintechs, and institutions issue cards, open virtual accounts and wallets, and move...

Rain Financial

Rain is a Middle East and North Africa (MENA) cryptocurrency exchange and digital-asset platform, operated through Rain Financial Inc. and its Bahrain entity...

Rainbird Technologies

Rainbird Technologies is an AI decision automation platform for regulated industries (banking and finance, insurance, tax and audit, healthcare, and law). It...

Rainbow

Rainbow is a CPaaS platform from Alcatel-Lucent Enterprise (ALE) that lets developers enrich applications with chat, group chat, voice, video, file sharing, ...

Rainbow.AI

Rainbow.AI provides hyperlocal precipitation forecasting APIs that deliver minute-by-minute rain and snow predictions at 1 km resolution, helping businesses ...

Raincoat

Raincoat builds embedded, highly scalable parametric climate insurance products and the automated infrastructure that powers them. Founded in 2019 and headqu...

Raindrop

Raindrop is the monitoring and observability platform for AI agents — a "Sentry for AI agents" that discovers silent agent failures in production. AI enginee...

Rainforest

Rainforest is a payfac-as-a-service (payment-facilitator-as-a-service) provider that lets vertical SaaS platforms embed payments and monetize them as revenue...

Rainforest QA

Rainforest QA is a no-code software testing platform that combines AI-powered test creation, crowdsourced manual QA, and automated browser testing in one pla...

Rainmaker Live

Rainmaker Live is a platform for live streaming, virtual events, and audience engagement. No public REST APIs or developer documentation have been verified a...

Rainmarket

Rainmarket is the flagship intelligence platform of Digital Media Nusantara (DMN), built to map and illuminate cross-border trade flows between ASEAN and Hon...

RainViewer

"Radar data collected from different websites across the Internet"

Rainwalk Technology

Rainwalk Technology is a white-label, embedded pet insurance provider founded in 2018 and based in Columbia, South Carolina. Rainwalk lets partners such as s...

Rainway

Rainway is a developer platform for interactive application streaming, letting you embed and run native apps anywhere in a few lines of code. Its Stream SDK ...

Raise

Raise is a digital gift card marketplace and commerce platform. Raise for Business exposes the Raise Commerce API — a REST/JSON API that lets partners progra...

Raised

Raised (joinraised.com) is an AI-powered recruiting platform founded in 2022 and backed by 500 Global. It delivers vetted candidates to venture-backed startu...

Raisin

Raisin is a fintech savings and investment marketplace that gives consumers access to high-yield savings accounts, CDs, and cash deposit products from a netw...

rakam

Rakam is a warehouse-native product analytics platform that lets business and data teams build analytics interfaces without coding, operating directly on the...

Raken

Raken is a San Diego-based construction technology company providing a field-first daily reporting and field management platform for general contractors, sub...

Rakuten

Rakuten Group is a Japan-headquartered internet conglomerate spanning e-commerce (Rakuten Ichiba), fintech (Rakuten Bank, Rakuten Card, Rakuten Securities), ...

Rakuten Mobile

Rakuten Mobile is the Japanese mobile network operator (MNO) of Rakuten Group, headquartered in Setagaya, Tokyo, and Japan's fourth nationwide carrier alongs...

Rally

Rally (Rally Rd.) is an alternative-asset investing platform that lets everyday investors buy and sell equity shares in individual collectible assets — class...

Rally Network

Rally Network (RLY Protocol, stewarded by the RLY Network Association) is a permissionless, open-source, multi-chain web3 mobile toolkit for developers. It p...

Rally Rd

Rally (formerly Rally Rd.) is a New York-based alternative-asset investment platform that lets everyday investors buy and sell equity shares in collectible a...

Rallybio

Rallybio Corporation (NASDAQ RLYB) is a clinical-stage biotechnology company headquartered in New Haven, Connecticut, founded in 2018, developing and commerc...

Rallyware

Rallyware is an AI-powered sales performance and workforce enablement platform that guides

Ralph Lauren

Ralph Lauren is a global leader in the design, marketing, and distribution of premium lifestyle products across apparel, footwear, accessories, home, fragran...

Ralph Lauren Corporation

Ralph Lauren Corporation (NYSE: RL) is a global premium-lifestyle company founded by Ralph Lauren in 1967 and headquartered in New York City. The company des...

RamAIn

RamAIn builds AI agents that automate any UI task with natural language. A Y Combinator (W26) company backed by General Catalyst and Nexus Venture Partners, ...

Ramble

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

RAML

RAML (RESTful API Modeling Language) is a YAML-based specification language for describing RESTful APIs with first-class support for reusable patterns, trait...

Ramp

Ramp is a finance automation platform that combines corporate cards,

Ramper

Ramper is a Web3 embedded-wallet and social-login platform that lets DApps onboard users with familiar Web2 credentials (Email, Google, Facebook, Apple, Twit...

Ramre

Ramre (RamRe) is the brand associated with Ram Reinsurance, now operating as American Overseas Group Limited (AOG) — a Bermuda-based insurance holding compan...

Rancher

Rancher is an open source container management platform built by SUSE that provides a complete software stack for teams adopting containers. It simplifies Ku...

Randolph-Brooks FCU

Randolph-Brooks Federal Credit Union (RBFCU) is a member-owned, not-for-profit

Random Data

"Random data generator"

Random Stuff

"Can be used to get AI Response, jokes, memes, and much more at lightning-fast speed"

Random Useless Facts

"Get useless, but true facts"

Random User Generator

Free random user data API for generating realistic fake user profiles with names, addresses, photos, and contact data for UI mockups and testing. Open-source...

RandomDog

"Random pictures of dogs"

RandomDuck

"Random pictures of ducks"

RandomFox

"Random pictures of foxes"

Randommer

"Random data generator"

Range

Range is team-communication and collaboration software from Range Labs that

Range Resources

Range Resources is an independent natural gas, natural gas liquids, and oil company engaged in the exploration, development, and acquisition of natural gas a...

RangeForce

RangeForce is a cloud-based cyber range and hands-on cybersecurity training

Ranger

Ranger is an AI-powered quality-assurance platform that lets coding agents verify their own work in a real browser. Its CLI (@ranger-testing/ranger-cli) sets...

Rangers Protocol

'Rangers Protocol is an EVM-compatible Layer 1 blockchain (Chain ID 2025)

Rani Therapeutics

'Rani Therapeutics is a clinical-stage biotechnology company developing the RaniPill, an

Rank Science

RankScience (RankScience LLC) is a San Francisco based SEO and AI-visibility agency that turns search rankings into revenue for startups, SaaS companies, and...

Ranker

'Ranker is a consumer internet company that runs ranker.com, a crowdsourced

RankScience

'RankScience is a San Francisco based SEO and AI-visibility agency (RankScience

Rapchat

Rapchat is a mobile-first music creation platform for artists, rappers, singers, and producers, founded in 2014. Creators use the Rapchat iOS and Android app...

Raphe Mphibr

Raphe mPhibr is an Indian deep-tech aerospace company revolutionizing unmanned aviation through in-house carbon fiber composites, UAV airframes, propulsion, ...

Rapid7

Rapid7 is a cybersecurity company providing the Insight Platform with

RapidAPI

RapidAPI operates the world's largest API marketplace, connecting developers to thousands of APIs through a single platform. Their developer platform provide...

Rapidata

Rapidata provides human feedback at scale — crowd-sourced labeling, model evaluation, ranking, and preference data (RLHF-style) collected from real people wo...

RapidCanvas

RapidCanvas is an enterprise agentic-AI platform that helps organizations build, deploy, govern, and operate AI agents integrated with existing business syst...

RapidClaims

RapidClaims is a healthcare revenue-cycle-management (RCM) company building autonomous AI agents for medical coding and claims. Its platform automates medica...

Rapidfolio

Rapidfolio is an AI operations platform for financial-services companies that automates back-office workflows — KYC/KYB and identity verification, lending un...

RapidFort

RapidFort is a software supply chain security platform focused on container hardening and automated CVE remediation. Its platform analyzes container vulnerab...

Rapidminer

RapidMiner (now Altair RapidMiner / Altair AI) is a data science and machine learning platform that unites data preparation, machine learning, and predictive...

Rapido

'Rapido is an Indian on-demand urban mobility platform that connects riders

RapiDoc

RapiDoc is a web component that allows developers to easily integrate interactive documentation for their APIs. It provides a user-friendly interface for exp...

RapidSOS

RapidSOS operates what it calls "the world's largest Safety Network," an intelligent safety platform that connects public safety agencies (911 / ECCs), enter...

Rappi

Rappi is a Colombian-founded pan-Latin American super-app headquartered in Bogotá, with regional hubs in São Paulo and Mexico City. Founded in 2015 by Simón ...

Rapportive

Rapportive was a browser extension that added a contact-intelligence sidebar to Gmail, surfacing a person's name, photo, job, and social profiles alongside t...

Rapsphere

RAPsphere was a mobile IT company that developed mobile information management solutions

Rapt

Rapt is a company surfaced as a portfolio company of accel and added to the API Evangelist

RAPT Therapeutics

'RAPT Therapeutics is a clinical-stage biopharmaceutical company developing

Rapyd

Rapyd is a global Fintech-as-a-Service network offering collect, disburse, hold, and issue capabilities across

RareLee

RareLee (Rarelee) is a Seoul-based premium personal style consulting company founded in

Rarible

Rarible is a multichain NFT marketplace and aggregator providing a unified REST API for searching, trading, and managing NFTs across Ethereum, Polygon, Arbit...

Rarify

'Rarify is a company surfaced as a portfolio company of pantera-capital and added to the

Rasa

Rasa is an open-core conversational AI framework for enterprises, built by Rasa Technologies GmbH, that natively leverages generative AI through CALM (Conver...

Rasayel

Rasayel is a WhatsApp platform for B2B sales teams. It combines a shared team inbox, workflow automation and lead qualification, chatbots and AI, WhatsApp me...

Rascal Games

Rascal Games is a game development studio founded by Rick and Jon, both experienced entrepreneurs previously at Blitz.gg and Discord. The studio is building ...

Raseedi

Raseedi is an Egyptian financial technology platform that helps underbanked users manage their spending and save money. Through its mobile app it offers free...

Rasgo

Rasgo is an AI-powered Copilot for your data warehouse, letting teams query and analyze their data through natural-language interfaces while the data stays i...

Rask AI

Rask AI is an AI video and audio localization platform offering automated

Raspire

Raspire (RASPIRE) provides runtime security for mobile applications, positioning itself as the first line of defense for Android and iOS apps against AI-powe...

Raspire Inc.

Raspire Inc. (RASPIRE) is a mobile application security company offering AI-powered, no-code runtime application self-protection for Android and iOS apps. It...

Rasyonet

Rasyonet is a Turkish fintech company providing integrated financial software solutions and capital markets data platforms for institutional clients, asset m...

RatedPower

RatedPower, part of Enverus (ENVERUS RATEDPOWER S.L.U., Madrid, Spain), is a cloud software platform for the design and engineering of utility-scale renewabl...

RateHawk

RateHawk is the B2B hotel and travel booking brand of Emerging Travel

Ratify

Ratify is a CNCF Sandbox open-source verification framework for container images and other supply chain artifacts in Kubernetes environments. It enables poli...

Ratio 21

Ratio 21 is a company surfaced as a portfolio company of bloomberg-beta and added to the

Rational

Rational (rational.to) is a Y Combinator (S26) company building AI employees, or "AI coworkers," for accounting and finance teams. Its AI agents onboard them...

ratter

ratter is a company surfaced as a portfolio company of slow-ventures and added to the API

Rattle

Rattle is a sales-execution platform that positions itself as "the AI layer your CRM always needed," connecting Salesforce and Slack so revenue teams can aut...

Raus

Raus (operated by StayRaus GmbH, Berlin) is a consumer platform for booking sustainable, design-forward tiny cabins in nature across Germany and Austria, giv...

Ravelin

Ravelin is a London-based fraud detection and prevention platform offering AI-native, real-time

Raven

Raven is a runtime security platform that protects applications from the inside, detecting and preventing malicious code execution as it happens rather than ...

Raven Risk AI

Raven Risk AI is an AI platform for credit managers and investment professionals

Ravio

'Ravio is a real-time compensation benchmarking and total-rewards platform for people and

Raw Apothecary

Raw Apothecary is a Mexico-based consumer brand that operated a Shopify storefront at

RAWG

RAWG is the largest video game database and game discovery service, providing access to more than 350,000 games across 50+ platforms with rich metadata inclu...

RAWG.io

"500,000+ games for 50 platforms including mobiles"

Rawsome Pte. Ltd.

Rawsome Pte. Ltd. (trading as Rawsome Asia Beverages) is a Singapore-based producer and

Ray

Ray is an open-source unified compute framework, stewarded by Anyscale, that scales Python and AI workloads from a laptop to a cluster. It consists of Ray Co...

Ray Browser

Ray Browser is an AI-powered web browser that learns a user's interests and browsing habits to personalize their internet experience. It ships a built-in age...

Ray Therapeutics

'Ray Therapeutics is a clinical-stage biotechnology company developing

Raycast

Raycast is a macOS (and Windows, in beta) productivity launcher that ships

Raydiant

Raydiant is a digital signage and in-location experience management platform for brick-and-mortar businesses, now operating under the Displai brand (raydiant...

Raydium

Raydium is a leading Solana AMM and liquidity provider supporting standard

Raygun

Raygun is an application monitoring platform that combines Crash Reporting, Real User Monitoring (RUM), and Application Performance Monitoring (APM) into a s...

Raymond James Bank

Raymond James Bank is a Florida-chartered state member bank headquartered in St. Petersburg, Florida, and a wholly owned subsidiary of Raymond James Financia...

Raymond James Financial

Raymond James Financial is a diversified financial services holding company headquartered in St. Petersburg, Florida, providing investment banking, wealth ma...

Rayon

Rayon is an AI-powered CAD (computer-aided design) platform built for interior designers and architects, positioned as a modern, browser-based alternative to...

Rayonier

Rayonier is a major US corporation and Fortune 1000 company. The Rayonier API provides programmatic access to its platform services, data, and integrations f...

Raytheon

Raytheon is an American aerospace and defense manufacturer operating as a business of RTX Corporation, the world's largest aerospace and defense company. Ray...

Razer

'Razer is a global lifestyle brand for gamers that designs gaming hardware (Blade laptops,

Razorpay

Razorpay is India's leading full-stack payments and business banking platform, enabling merchants to accept, process, and disburse payments across cards, UPI...

Razorpay IFSC

"Indian Financial Systems Code (Bank Branch Codes)"

RB2B

RB2B is a US-focused B2B website visitor identification platform that resolves anonymous web traffic into person-level leads — names, LinkedIn profiles, hash...

RBAC

Role-Based Access Control (RBAC) is a security paradigm that restricts system access based on assigned roles rather than individual user identities. Users ar...

RC Chirp

RC Chirp is a company surfaced as a portfolio company of a16z and added to the API Evangelist

Rcom

Rcom (Reliance Communications, RCOM) is an Indian telecommunications and digital infrastructure company providing enterprise connectivity, voice, and data-ce...

RCS Capital

RCS Capital Corporation (RCAP) was a publicly traded holding company focused on the financial services industry, founded by Nicholas Schorsch and taken publi...

RCSB PDB

RCSB Protein Data Bank (RCSB PDB) is a scientific data resource providing

rdbio (仁度生物 / Rendo Biotech)

Rendo Biotech (仁度生物) is a Shanghai-based molecular diagnostics company

RDF

The Resource Description Framework (RDF) is a W3C standard for representing information about resources on the web. RDF is the foundation for linked data and...

RDP

The Remote Desktop Protocol (RDP) is a proprietary network protocol developed by Microsoft that provides a graphical interface to connect to another computer...

Re

Re (Re Protocol) is an onchain reinsurance platform that channels stablecoin capital into fully collateralized, regulated reinsurance contracts. It issues tw...

Re:Build

Re:Build Manufacturing is a U.S.-based industrial engineering and manufacturing company that takes complex products from concept to full-rate production thro...

REA Group

REA Group Limited is an ASX-listed (ASX:REA) digital real estate advertising

Reach

Reach Power (Reach Labs) is a Y Combinator-backed (S2015) wireless power company building long-range wireless energy distribution networks, aiming to "do for...

Reach Labs

Reach Labs (operating as Reach Power Inc.) is a wireless power transmission company that delivers electrical energy through the air without physical connecti...

Reachdesk

Reachdesk is a global B2B corporate gifting and direct mail platform that enables sales, marketing, and customer success teams to send physical gifts, brande...

Reachware Inc.

Reachware is an Integration Platform as a Service (iPaaS) that lets separate SaaS and business systems operate as one connected ecosystem, with 200+ prebuilt...

React

A JavaScript library for building user interfaces, maintained by Meta and the open source community.

React Foundation

The React Foundation is a Linux Foundation project announced in February 2026 that supports React, React Native, and supporting components after Meta contrib...

React Native

A framework for building native apps using React, enabling cross-platform mobile development for iOS and Android.

Reaction Commerce

Reaction Commerce is an open-source, API-first, headless commerce platform built with Node.js, React and GraphQL and deployed via Docker and Kubernetes. Acqu...

Reactiv

Reactiv is an AI-forward mobile app platform that empowers Shopify merchants and commerce brands to build native iOS and Android apps and downloadable-free A...

Reactive Biosciences

Reactive Biosciences is a company surfaced as a portfolio company of canaan-partners and

Reactive Programming

Reactive Programming is a software development paradigm centered around asynchronous data streams and the propagation of changes. It enables building event-d...

Reactome

Reactome is a free, open-source, curated, and peer-reviewed biological pathway database. It provides comprehensive pathway data covering human biology and or...

Reactor

Reactor is a real-time video AI platform that streams generative video from GPU-hosted models to web and mobile applications over WebRTC, with sub-second rou...

ReadMe

ReadMe is a developer hub platform that helps companies design, document, and operate their APIs. The platform combines hosted API reference (OpenAPI-driven)...

ReadMe Metrics

ReadMe is an API documentation and developer hub platform that helps companies build interactive API documentation, track API usage analytics, and improve de...

Readme typing SVG

"Customizable typing and deleting text SVG"

ReadMe.io

ReadMe is a developer-experience platform that turns an OpenAPI definition into interactive, personalized API documentation and developer hubs — complete wit...

README.md

Standard repository documentation file providing project overview, setup instructions, and usage examples. Automatically displayed on repository landing page...

ReadSoft

ReadSoft was a provider of intelligent automation and business process management solutions for accounts payable and other document-intensive processes. Acqu...

ReadSpeaker

ReadSpeaker provides text-to-speech (TTS) cloud and embedded solutions used to add voice to websites, mobile apps, e-learning, transportation systems, and mo...

Ready (formerly Argent)

Ready (formerly Argent) is a self-custodial crypto wallet and smart-account platform for Starknet and Ethereum. It builds account-abstraction wallets (Ready ...

Ready Player Me

Ready2order

ready2order is an Austrian cloud point-of-sale (POS) system for small businesses in gastronomy, retail, and services, running on tablets, phones, computers, ...

ReadyAPI

ReadyAPI is SmartBear's enterprise-grade automated API testing platform. It unifies functional, security, performance, and virtualization testing for REST, S...

ReadySet

Readyset is a realtime SQL caching engine for Postgres and MySQL. It sits between applications and the database as a wire-compatible proxy, automatically cac...

Real

Real is a company surfaced as a portfolio company of insight-partners, lightspeed-venture-partners

Real Gift Services

RealGifts (Real Gift Services) is a Gifting-as-a-Service (GaaS) and G-Commerce platform, operating since 2008, that lets platforms and apps embed a turnkey g...

Real Time Finance

"Websocket API to access realtime stock data"

RealBlocks

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

RealEstateAPI

RealEstateAPI.com offers expressive property data APIs designed for building prop-tech applications. The platform exposes nationwide US property records incl...

Realink.com

Realink.com is a company surfaced as a portfolio company of insight-partners and added to

Reality Defender

Reality Defender is an enterprise deepfake and AI-generated media detection platform that identifies manipulated images, video, audio, and text across calls,...

Reality Reflection

Reality Reflection is a technology studio, surfaced as a portfolio company of 500 Global,

Realm

Realm is a consumer home-technology company that gives homeowners data-driven insights about their property's value and its renovation potential. The Realm p...

RealNetworks

RealNetworks is a Seattle-based technology company that pairs AI-powered computer-vision and secure-communication products with its long-running consumer med...

Realogy Holdings

Realogy Holdings (now Anywhere Real Estate) is a global provider of residential real estate services with brands including Better Homes and Gardens Real Esta...

RealPact

RealPact is a Y Combinator (Summer 2026) startup building an AI-native operating system for real estate brokerages. Its voice-enabled AI agents automate the ...

RealPage

RealPage is a multifamily and rental-housing software company offering

RealScout

RealScout is a lead-nurture and collaborative home-search platform for real estate professionals — agents, teams, and brokerages — that turns an agent's exis...

Realta Fusion

Realta Fusion is a fusion-energy company developing compact, scalable, modular magnetic-mirror

Realtime

A topic catalog of realtime APIs, protocols, providers, and patterns. Realtime distinguishes itself from streaming by being interactive and typically bidirec...

Realtor

Realtor.com is an online real estate marketplace operated by Move, Inc., providing home listings, neighborhood information, and tools for buyers, sellers, an...

Realtor.com

Realtor.com is a real estate listings website operated by Move, Inc., a subsidiary of News Corp, headquartered in Santa Clara, California. The platform is th...

Realty Income

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

Realty Mogul

RealtyMogul is a real estate crowdfunding and investment platform that gives individual

RealtyMole

RealtyMole (Realty Mole Property API) is a US real-estate and property

Realtyna

Realtyna provides real estate technology including IDX, RESO Web API integrations, MLS data routing, and a WordPress-based property platform (WPL). Their API...

RealtyShares

RealtyShares is a company surfaced as a portfolio company of union-square-ventures and added

RealWear

RealWear builds rugged, hands-free head-mounted and assisted-reality wearable computers (the Navigator series and HMT-1) for frontline and industrial workers...

Realworld

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

Realy

'Realy is a company surfaced as a portfolio company of multicoin-capital and added to the

REalyse

REalyse is a UK residential property data platform that aggregates more than 100 data sources into geospatial analysis and market-intelligence tools for deve...

ReasonBlocks

ReasonBlocks is a Y Combinator (Spring 2026) startup building a drop-in runtime layer that makes production AI agents observable, self-correcting, and cheape...

Rebag

Rebag is an online marketplace for buying, selling, and trading pre-owned luxury goods — designer handbags, watches, fine jewelry, shoes, apparel, and access...

Rebaja Tus Cuentas

Rebaja Tus Cuentas is a Latin American consumer fintech, backed by 500 Global, that helps individuals lower their debt and monthly loan payments. Through its...

Rebel Girls

Rebel Girls is a global media and publishing brand that celebrates inspiring stories about girls and women, empowering young audiences through books, a podca...

Rebellion Defense

'Rebellion Defense (rebelliondefense.com) is a defense-technology company

Rebellions

Rebellions is an AI infrastructure company that designs energy-efficient AI inference hardware (NPUs) and the software stack to deploy large language and mul...

Rebookify

Rebookify is a travel-technology company that helps travel agencies and travel

Rebrandly

"Custom URL shortener for sharing branded links"

rebtel

Rebtel is a Swedish international communications company (Rebtel Networks AB, registered 556680-3622, headquartered in Stockholm) serving the world's roughly...

Rec Room

'Rec Room is a cross-platform social gaming and user-generated-content platform where players

Recall

Recall is a decentralized AI-agent competition network — "the world's most trusted AI rankings." Agents compete head-to-head in crowdsourced skill markets (c...

Recall Labs

'Recall is a decentralized platform for verifying AI performance through community-driven

Recall.ai

Recall.ai provides meeting bot infrastructure through a REST API that enables developers to programmatically join Zoom, Microsoft Teams, Google Meet, Webex, ...

RecappED

'RecappED (recapped.io) is an AI-powered digital sales room and customer

ReccoBeats

ReccoBeats is a free music recommendation and database API service. It

Receeve

Receeve is a no-code debt collection and receivables management SaaS platform, founded in Hamburg, Germany and backed by Speedinvest. It was acquired by InDe...

Recess

Recess (Recess Academy, recess.gg) is an online school for gifted and neurodivergent students, including learners with ADHD, dyslexia, autism spectrum, and a...

Recharge

Recharge (Recharge Payments) is a subscription and recurring-billing

Recife City Open Data

Recife City Open Data is a open data portal open-data portal for Brazil running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interf...

RecipeAPI

"Recipes, ingredients, nutrition data and cooking instructions"

Reckitt Benckiser

Reckitt Benckiser is a British multinational consumer-goods company focused on health, hygiene, and nutrition. Its portfolio includes globally recognised bra...

Reclaim.ai

AI-powered scheduling platform with a REST API for managing tasks, habits,

Reco

Reco is a SaaS security platform using identity-centric analysis to detect threats, prevent data exposure, and manage access across SaaS applications.

Recognise Bank

Recognise Bank Limited is a UK challenger bank focused on the SME sector and the personal and business savings markets, offering fixed-rate, notice, and easy...

RecommerceX

'RecommerceX is an engineering-driven manufacturing company applying circular-economy

Recommind

'Recommind was an enterprise information analytics and eDiscovery software

Recorded Future

Recorded Future is a threat intelligence platform whose Intelligence Cloud combines open-web, dark-web, technical,

Recordgram

Recordgram is a mobile music-creation platform, now operating as Cre8tor (cre8tor.app),

Recount Media

Recount Media operates The Recount, a political news and media outlet that distributes government and political coverage across social platforms (TikTok, Ins...

Recraft

Recraft is an AI design platform offering raster and vector image generation, image editing, inpainting, background removal/generation, vectorization, upscal...

Recraft

Recraft is a London-based AI design platform — founded in 2023 by Anna Veronika Dorogush (creator of the CatBoost ML framework) — that builds production-grad...

Recreation Information Database

"Recreational areas, federal lands, historic sites, museums, and other attractions/resources(US)"

Recreation.gov

The Recreation Information Database (RIDB) provides data resources to citizens, offering a single point of access to information about recreational opportuni...

Recruitee

Recruitee (part of Tellent) is a collaborative applicant tracking system (ATS) and recruiting platform that helps growing companies build hiring pipelines, p...

Recurly

Recurly is a subscription management and recurring billing platform that handles signups, plans, add-ons, coupons, dunning, invoicing, tax, revenue recogniti...

Recurrency

Recurrency is an AI-powered ERP automation platform for wholesale distributors and B2B suppliers, sitting on top of distribution ERPs to automate and optimiz...

Recursal AI, Inc.

Recursal AI, Inc. operates Featherless AI, a serverless AI inference platform that provides unified, OpenAI-compatible API access to tens of thousands of ope...

Recurse

Recurse ML is an AI-powered code review platform built for modern development workflows that lean on AI coding assistants like Cursor, Claude Code, and GitHu...

Recursion

Recursion (Recursion Pharmaceuticals, NASDAQ RXRX) is a clinical-stage

Recursion Pharmaceuticals

Recursion Pharmaceuticals (NASDAQ: RXRX) is a Salt Lake City-based AI-enabled drug discovery company that operates the Recursion Operating System (Recursion ...

Recursive

Recursive (Recursive Superintelligence) is an AI research company founded in 2025 and

Recursive Superintelligence

Recursive (Recursive Superintelligence) is an AI research company based in San Francisco and London building recursive self-improving superintelligence to au...

RecVue

RecVue is an enterprise revenue management platform (RevOS - the Revenue

Recycleye

Recycleye is a London-based company building AI-powered sorting equipment and analytics for waste management and material recovery businesses worldwide. Its ...

Recyda

Recyda is a German software company offering an all-in-one platform for packaging sustainability and regulatory compliance. The platform centralizes packagin...

Red Access

'Red Access (redaccess.io) is a cloud-based enterprise browsing and Secure

Red Balloon Security

Red Balloon Security is an embedded-device and firmware security company that protects critical infrastructure across automotive, aerospace, defense, industr...

Red Beacon

Redbeacon was a consumer home-services marketplace that connected homeowners with local service professionals — for home repair, cleaning, landscaping, handy...

Red Hat

APIs and developer resources from Red Hat, a leading provider of enterprise open source solutions including Linux, cloud, container, and Kubernetes technolog...

Red Hat

Red Hat is an IBM subsidiary providing enterprise open source software including Red Hat Enterprise Linux, OpenShift, and Ansible Automation Platform, with c...

Red Hat 3scale

Red Hat 3scale API Management is an enterprise-grade API management platform that enables organizations to share, secure, distribute, control, and monetize A...

Red Hat Ansible Automation Platform

Red Hat Ansible Automation Platform is an enterprise automation solution that provides a framework for building and operating IT automation at scale. It incl...

Red Hat Enterprise Linux

Red Hat Enterprise Linux (RHEL) is the world's leading enterprise Linux platform, providing APIs and services for subscription management, security insights,...

Red Hat Enterprise Linux 8

Red Hat Enterprise Linux 8 (RHEL 8) is an enterprise-grade Linux distribution that provides a stable, secure, and high-performance operating system platform ...

Red Hat OpenShift

Red Hat OpenShift is an enterprise Kubernetes platform that provides a consistent hybrid cloud foundation for building, deploying, and scaling containerized ...

Red Hat Satellite

Red Hat Satellite is a systems management product that helps deploy, configure, and maintain systems across physical, virtual, and cloud environments.

Red Hot Labs

Red Hot Labs is a company surfaced as a portfolio company of a16z and added to the API Evangelist

Red Planet Labs

Red Planet Labs builds Rama, a unified platform for constructing end-to-end scalable backends in as little as 1/100th the code of traditional stacks. Rama in...

Red Points

Red Points operates an AI-powered brand protection and anti-counterfeiting platform used by businesses to detect and remove counterfeits, unauthorized seller...

Red RidgeBio

'RedRidge Bio is a clinical-stage biotechnology company that identifies and

Red Sky Systems

Red Sky Systems is a company surfaced as a portfolio company of battery-ventures and added

Red Tricycle

Red Tricycle (redtri.com) was a digital parenting media company publishing local family

Red Ventures

'Red Ventures is a privately held digital marketing and media holding company headquartered

Red5

Red5 provides real-time streaming infrastructure for live video and audio delivery at scale. The Red5 Pro platform includes a media server, Stream Manager 2....

Redash

"Access your queries and dashboards on Redash"

RedBack Networks

RedBack Networks is a company surfaced as a portfolio company of accel, mayfield and added

RedCap

RedCap is an automotive dealer service software company that built an on-demand vehicle

Redcarpetup

Redcarpetup is a company surfaced as a portfolio company of y-combinator and added to the

RedCircle

RedCircle is a podcast advertising, hosting, and monetization platform founded in 2018 that turns podcast host-read endorsements into measurable results for ...

Reddit

Reddit is a social news aggregation, discussion, and community platform

RedDoorz

RedDoorz is a Southeast Asian budget-hospitality technology company that operates a franchise and management network of economy hotels and rooms across Indon...

ReDEF

'REDEF is a media curation and newsletter company founded and led by Jason

Redesign Health

Redesign Health is a global venture and applied technology firm that backs and builds next-generation healthcare companies. Founded in 2018, it partners with...

Redfin

Redfin is a technology-powered real estate brokerage that provides property

Redis

Redis is an open source, in-memory data structure store used as a database, cache, message

Redis Streams

Redis Streams is a data structure in Redis that models an append-only log for managing streams of data, providing consumer groups, message acknowledgment, an...

Redmine

Redmine is a flexible open source project management web application written in Ruby on Rails that supports multiple projects, issue tracking, Gantt charts, ...

RedNote (Xiaohongshu)

'RedNote, known in China as Xiaohongshu (小红书, "Little Red Book"), is a

ReDoc

ReDoc is an open-source API documentation renderer for OpenAPI specifications by Redocly. It generates a responsive three-panel documentation layout from Ope...

Redocly

Redocly is a company that specializes in API documentation and governance tooling. Their platform helps organizations create, manage, and publish API documen...

Redotpay

RedotPay is a global stablecoin-based payment fintech that integrates blockchain solutions with traditional banking and finance infrastructures. The platform...

Redox

Redox is a healthcare data interoperability platform, founded in 2014 and headquartered in Madison, Wisconsin, that enables secure, real-time exchange of cli...

Redox

Redox is a healthcare interoperability platform that lets digital health vendors, providers, and payers send, receive,

Redpanda

Redpanda is a Kafka API-compatible streaming data platform written in C++ with no JVM and no ZooKeeper, optimized for low latency and operational simplicity....

Redplanetlabs

Red Planet Labs builds Rama, a unified backend platform for the JVM (Java/Clojure) that consolidates databases, queues, workers, and infrastructure into a si...

Redpoint Ventures

Redpoint Ventures is a Silicon Valley venture capital firm founded in 1999 and headquartered in Menlo Park, California, with additional offices in San Franci...

RedStone

RedStone is a modular blockchain oracle infrastructure provider delivering tamper-proof price feeds and off-chain data to smart contracts across 100+ EVM and...

Redstone Communications

Redstone Communications is a company surfaced as a portfolio company of battery-ventures

Reduct

Reduct (reduct.video) is a video intelligence platform that transcribes, translates, redacts, searches, annotates, and edits audio and video through a text-b...

Reducto

Reducto is an agentic document platform that provides a REST API for parsing, extracting, splitting, classifying, and editing complex documents such as PDFs,...

Reducto Ai

Reducto is an AI document-parsing platform that turns unstructured PDFs, images, spreadsheets, slides, and forms into LLM-ready layout, structured data, and ...

Redux

Redux is a predictable state container for JavaScript apps. It helps write applications that behave consistently, run in different environments (client, serv...

RedWing Aerospace Laboratories

RedWing Aerospace Laboratories (RedWing Labs, operated by Kitemaps AMS Pvt Ltd) is a Bangalore, India based, Techstars-backed company that designs, develops ...

Redwood Bank

Redwood Bank is a specialist UK challenger bank for small and medium-sized

Redwood Systems

Redwood Systems is a company surfaced as a portfolio company of battery-ventures and added

RedwoodJS

"Full-stack JavaScript framework with a built-in GraphQL API layer (Yoga + Envelop stack), schema-first development, and automatic SDL generation for Prisma-...

Reebee

Reebee is a company surfaced as a portfolio company of y-combinator and added to the API

Reed

"Job board aggregator"

Reedsy

Reedsy is a marketplace and toolset for authors and publishers, connecting

REEF

'REEF Technology operates a network of urban logistics and proximity real-estate

Reelables

Reelables provides Track Anywhere smart labels and a RESTful platform API for global supply-chain and logistics visibility. The paper-thin Bluetooth and cell...

ReelData AI

ReelData AI builds artificial intelligence software for land-based aquaculture, helping recirculating aquaculture system (RAS) fish farms maximize growth, mi...

Reesio

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

reetian

'reetian (Chinese brand 瑞天数智, Reetian Digital Intelligence) is a China-based

REEV

REEV is a medical-technology company developing AI-powered wearable robotics for

Reevo

'Reevo is an AI-native revenue platform ("revenue operating system") that

Reface

Reface (NeoCortext, Inc.) is an AI-native consumer app studio best known for its flagship Reface face-swap and AI-avatar application, alongside a portfolio o...

Refact.ai

Refact.ai is an open-source, local-first AI coding assistant and autonomous software-engineering agent built by Small Magellanic Cloud Ai Ltd. ("SmallCloud")...

Referly

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

Refersion

Affiliate marketing platform for e-commerce brands providing a REST and

RefineRE

RefineRE is a commercial real estate (CRE) SaaS platform that unifies benchmarking, data analysis, and portfolio usage tools into a single product suite for ...

Refinitiv

Refinitiv, an LSEG (London Stock Exchange Group) business, provides financial market data, infrastructure, and analytics to businesses and financial professi...

Refinitiv Eikon

Refinitiv Eikon provides financial professionals with access to real-time market data, news, analytics, and trading capabilities. The Eikon Data API allows p...

Refitter

Refitter is a .NET tool and source generator that produces Refit HTTP client interfaces from OpenAPI specifications. It runs at compile time as a source gene...

Reflect

Reflect is an AI-powered automated end-to-end testing platform that enables teams to effortlessly create, execute, and troubleshoot automated browser tests. ...

Reflect Orbital

'Reflect Orbital is a space-technology company developing satellite-based

Reflect Software

Reflect Software is a company surfaced as a portfolio company of battery-ventures and added

Reflection AI

Reflection AI is an artificial intelligence research lab building frontier open intelligence — open models that let anyone control their own intelligence and...

Reflection AI

Reflection AI is a frontier artificial intelligence lab building "open intelligence" — releasing open model weights, publishing research, and open-sourcing a...

Reflektion

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

Reflektive

Reflektive is a cloud-based performance management platform that enables organizations to scale constructive, ongoing conversations across their workforce. T...

Reflex

'Reflex is a company surfaced as a portfolio company of lux-capital and added to the API

Reflex Careers

Reflex (Reflex Careers) is an on-demand labor platform for retail stores,

Reflexer

'Reflexer Labs builds RAI, a decentralized, non-pegged stable asset backed

Reforge

Reforge is the company behind Reforge Launch, a developer platform for feature flags, live configuration, dynamic log levels, and experimentation delivered a...

Reform

Reform is a developer-first, conversion-optimized form builder with a REST API for creating type-safe forms, managing form definitions, collecting submission...

Reframe

'Reframe (usereframe.ai) is a San Francisco-based Y Combinator Winter

refresh

Refresh (refresh.si) is a digital marketing agency focused on building

Refuel

Refuel is a data labeling and enrichment platform that uses large language models to label, clean, structure, and enrich text datasets at scale. Its Refuel C...

Refuel

Refuel is an AI data-labeling and data-enrichment platform that uses LLMs

REFUGE Restrooms

"Provides safe restroom access for transgender, intersex and gender nonconforming individuals"

Refundid

Refundid is an instant-refund platform for e-commerce returns in Australia/NZ. Provides instant cash refund at the point of return initiation.

Refurbed

Refurbed is a European online marketplace for professionally refurbished electronics and other sustainable goods, headquartered in Vienna, Austria and operat...

Refyne

Refyne is an Indian financial wellness platform and the country's first earned wage access (EWA) provider, letting employees draw a portion of their already-...

Regal

Regal is a New York City-based AI Agent Platform purpose-built for contact center operations. The Regal platform lets enterprises design, test, deploy, monit...

Regal Beloit

Regal Beloit was a global manufacturer of electric motors, electrical motion controls, power generation, and power transmission products before merging with ...

Regal Entertainment Group

Regal Entertainment Group operates one of the largest motion picture theatre circuits in the United States, with theatres located in densely populated metrop...

Regal Rexnord

Regal Rexnord is a major US corporation and Fortune 1000 company. The Regal Rexnord API provides programmatic access to its platform services, data, and inte...

Regard

Regard is an AI-powered clinical diagnosis and documentation platform for hospitals and health systems. It reviews 100% of a patient's electronic health reco...

Regbase

Regbase is an AI-native regulatory intelligence platform that helps legal teams, compliance professionals, researchers, and government vendors monitor new an...

Regency Energy Partners

Regency Energy Partners LP (NYSE: RGP) was a publicly traded master limited partnership focused on midstream natural gas services including gathering, proces...

Regency Healthcare

'Regency Healthcare is a multi-specialty tertiary and super-speciality

Regeneron

Regeneron Pharmaceuticals is a leading biotechnology company that invents, develops, and commercializes life-transforming medicines, including EYLEA and EYLE...

Regeneron Pharmaceuticals

Regeneron Pharmaceuticals is a leading biotechnology company that invents, develops, and commercializes life-transforming medicines for people with serious d...

Reggora

Reggora is a modern appraisal management platform that connects mortgage

Regie.ai

'Regie.ai is an AI-powered sales engagement platform that helps B2B sales

Regional Australia Bank

Regional Australia Bank is a customer-owned (mutual) authorised deposit-taking

Regions Financial

Regions Financial Corporation is a member of the S&P 500 Index and one of the nation's largest full-service providers of consumer and commercial banking, wea...

Regrello

Regrello is an AI operating system for manufacturing and supply chain operations, giving

Regression Games

Regression Games builds AI agents and bots for video games. Its platform lets studios create bots for QA testing, multiplayer simulation, game balancing, and...

Regrid

Regrid is a national land parcel data platform providing REST APIs for querying parcel boundaries, ownership, zoning, assessed values, and deed records acros...

Regular Expressions

A sequence of characters that define a search pattern, commonly used for string matching, validation, and text manipulation across programming languages and ...

Regular Finance

Regular Finance (Regular) is a French fintech offering a consumer digital-asset yield account. Customers deposit euros by bank transfer and earn roughly 5.50...

Regulations.gov

Regulations.gov is the US federal government's central portal for public participation in the rulemaking process, operated by the General Services Administra...

Regulatory

The regulatory domain encompasses compliance requirements, regulatory reporting, and governance frameworks that organizations must adhere to across industrie...

Regulatory DataCorp

'Regulatory DataCorp (RDC) was a risk and compliance intelligence company whose flagship

Regulatory Templates

Pre-built templates, frameworks, and policy libraries for meeting regulatory compliance requirements across industries and jurisdictions including GDPR, HIPA...

Regulus

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

Rei do Pitaco

Rei do Pitaco is a Brazilian online sports betting, daily fantasy sports, and casino

Reibus

Reibus is a technology-enabled B2B platform for the industrial metals

Reibus International

Reibus International is an Atlanta, Georgia headquartered technology company operating a digital marketplace and open-deck freight logistics platform for the...

Reify Health

'Reify Health is a clinical research technology company whose mission is

Reindeer AI

Reindeer AI is an enterprise agentic AI platform that automates back-office business operations across finance, banking, insurance, supply chain, procurement...

Reiner.ai

'Reiner.ai (operated by AI Mapping GmbH of Cologne, Germany) is a construction-

Reinfer

Reinfer was a London-based communications intelligence company, backed by Seedcamp, that built a natural-language-processing platform for mining structured i...

Reinsurance Group of America

Reinsurance Group of America (RGA) is a leading global provider of life and health reinsurance and financial solutions, serving clients in more than 70 count...

Reinsurance Group of America

Reinsurance Group of America (RGA) is a leading global provider of life and health reinsurance and financial solutions, serving clients in more than 70 count...

Rejax

"Reverse AJAX service to notify clients"

Reka

Reka is a multimodal foundation model company building natively multimodal large language models capable of joint reasoning over text, image, video, and audi...

Reka AI

Reka AI is a multimodal foundation model company offering Reka Core, Flash, Edge, and Vision models that natively process text, images, video, and audio. The...

Reken

'Reken is an AI security company building a trust layer for the Internet

REKKI

REKKI is a food wholesale ordering platform that connects restaurants and chefs (buyers) with their suppliers. Restaurants place orders through the REKKI app...

rekord

Rekord is a Dublin-based fintech platform that helps banks and fintechs automate credit underwriting and customer onboarding. Its AI-native decisioning platf...

Relace

Relace builds purpose-built AI models and infrastructure for coding agents. Its hosted API exposes fast, specialized models — Instant Apply (relace-apply-3) ...

Relatable.io

Relatable is a Product Relationship Management (PRM) platform for the medical technology

Related Companies

Related Companies is a privately held, fully integrated real estate firm founded by Stephen Ross in 1972 as an affordable-housing developer and now active ac...

relateIQ

'relateIQ is a company surfaced as a portfolio company of accel, battery-ventures, redpoint-ventures

Relation Rx

Relation Therapeutics (Relation Rx) is a London- and Boston-based end-to-end biotechnology company developing transformational medicines with technology at i...

Relational Data Modeling

Relational data modeling is a database design approach that organizes data into tables (relations) with rows and columns, establishing relationships between ...

RelationalAI

RelationalAI is a decision-intelligence platform delivered as a Native App inside Snowflake. Its core product, Rel, builds a semantic model from data in Snow...

Relativity

Relativity is an eDiscovery and legal review platform offering RelativityOne,

Relativity Space

Relativity Space is an aerospace manufacturer building Terran R, a reusable

RelativityOne

RelativityOne is a cloud-based eDiscovery and legal technology platform that provides comprehensive REST APIs for legal hold management, document processing,...

Relay

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

Relay

Relay is an online business banking and cash-flow management platform for

Relay App

Relay.app is an AI-powered workflow automation platform that converts plain language into reliable visual workflows across 200+ app integrations. It supports...

Relay Compiler

Relay is Meta's open-source JavaScript framework and ahead-of-time GraphQL compiler for building data-driven React applications. The Relay Compiler scans Jav...

Relay Payments

'Relay Payments operates a secure digital payment network purpose-built

Relay Therapeutics

'Relay Therapeutics is a clinical-stage precision-medicine company in Cambridge,

Relay Therapeutics

Relay Therapeutics is a Cambridge, Massachusetts clinical-stage precision medicines company (NASDAQ: RLAY) using protein motion to drug historically intracta...

Relay.app

Relay.app was a workflow automation platform (an AI-assisted alternative to Zapier and Make) that let teams build and run automated, multi-step workflows con...

Release

Release is a developer-tools platform that provisions on-demand, full-stack ephemeral environments

Relevance AI

Relevance AI is a platform for building and deploying AI agents and AI-powered workflows.

Relevize

Relevize is an AI-driven partner payments and channel marketing platform that helps

Reliability Won

Reliability Won is a company surfaced as a portfolio company of battery-ventures and added

Reliable Robotics

Reliable Robotics is a California-based aerospace company developing continuous autopilot and remote piloting systems that retrofit existing fixed-wing aircr...

Reliance Health

'Reliance Health (formerly RelianceHMO) is a healthtech company making quality healthcare

Reliance Steel & Aluminum

Reliance Steel & Aluminum Co. is the largest metals service center in North America, providing value-added metals processing services and distributing a full...

Reliance, Inc.

Reliance, Inc. (NYSE: RS) is the largest metals service center operator in North America, distributing approximately 100,000 metal products across aluminum, ...

Relievant Medsystems

Relievant Medsystems is a medical device company that developed the Intracept Procedure, a minimally invasive treatment that uses radiofrequency ablation of ...

Relish

Relish is a consumer product operated at hellorelish.com and backed by Bullpen Capital,

Reliv

Reliv is a digital medical ecosystem operating in Ecuador and Mexico that aims to simplify healthcare management for clinics, hospitals, doctors, and patient...

Reload

Reload is "team chat for AI agents" — a workspace where every teammate's AI agents (Claude Code, Cursor, Codex, Devin, and any MCP-speaking agent) meet, work...

Reloadly

Reloadly is a global digital rewards and payments platform providing APIs for sending digital gift cards, airtime top-ups, and data bundles worldwide. The pl...

Reltio

Reltio is a cloud-native, AI-native master data management (MDM) and Context Intelligence Platform that unifies, cleanses, harmonizes, governs, and activates...

Rely.io

Rely.io is an internal developer portal that aggregates engineering data, provides software catalogs with blueprints and entities, engineering scorecards, se...

Relyance Ai

Relyance AI is an AI-native data security, AI security, and privacy platform that maps data flows from source code through cloud and SaaS systems to AI model...

Remarcable

Remarcable is an AI-powered procurement and materials-management platform built for MEP (mechanical, electrical, plumbing) trade contractors, distributors, a...

Remarkable AI

'Remarkable AI is an AI-powered customer engagement platform for consumer

Remberg

remberg is a Munich-based B2B SaaS provider of an Intelligent Asset Platform for maintenance,

Remedee Labs

'Remedee Labs is a French medical device company founded in 2016 in Grenoble that develops

Remedial Health

Remedial Health is a Nigeria-based healthtech company digitizing pharmaceutical procurement and pharmacy operations across Africa. Its platform connects reta...

Remedio

'Remedio is an autonomous cybersecurity remediation platform that detects and automatically

Remedy Corporation

Remedy Corporation was an IT service management (ITSM) software company founded in 1991 by Lawrence Garlick, David Mahler, and Doug Mueller, and backed by Ac...

Remedy Robotics

Remedy Robotics is a medical robotics company developing what it describes

Remedyskin

'Remedyskin (Remedy Science, operated by Doctorly Skin Inc.) is a dermatologist-developed

Remerge

Remerge is a mobile demand-side platform (DSP) specializing in app retargeting, re-engagement, and user acquisition for mobile apps. The Berlin-based company...

Remesh

Remesh is an AI-powered market research and audience insights platform that runs live,

Remind

Remind is a K-12 school-home communication platform that lets teachers, schools, and districts message students and families by text, app, email, and voice w...

Remio

Remio is a company surfaced as a portfolio company of techstars, version-one-ventures and

Remitbee

Remitbee is a Canadian licensed money-services business (FINTRAC-regulated, founded 2014, Mississauga, Ontario) offering low-cost international money transfe...

Remitian

Remitian is a fintech platform providing embedded tax payment infrastructure for tax software providers and accounting firms. Often described as the "Stripe ...

Remitly

'Remitly is a Seattle-based digital financial services provider for immigrants

Remix 3

Remix (YC W26, "remix-3" in the Y Combinator directory) is a San Francisco

Remnote

RemNote is an AI-powered note-taking, spaced-repetition, and PDF-annotation study platform founded at MIT and backed by General Catalyst, used by over a mill...

Remofirst

'Remofirst is a global employment platform and Employer of Record (EOR)

Remoov

Remoov is a San Francisco-based full-service removal, resale, donation, and recycling company that helps households and businesses declutter by picking up un...

Remora

Remora is a carbon-capture startup (legally Echeneidae Inc.) founded in 2020 and based in

Remote

Remote is a global HR platform for hiring, paying, and managing employees and contractors across 60+ countries. Its Employer of Record (EOR), global payroll,...

Remote

Remote.com is a global employment platform that lets companies hire, pay, and manage employees and contractors in 90+ countries without setting up local enti...

Remote Calc

"Decodes base64 encoding and parses it to return a solution to the calculation in JSON"

Remove.bg

"Image Background removal"

Render

Render is a cloud platform for building and running applications and

Render

Render is a unified cloud application platform (PaaS) for building, deploying,

Renesas

Renesas Electronics Corporation (TYO: 6723) is a global semiconductor manufacturer producing microcontrollers and microprocessors (RA, RX, RL78, RH850, RZ, S...

Renewable Energy Group

Renewable Energy Group (REG) is a North American producer of biodiesel and renewable diesel, founded with biodiesel operations dating to 1996 and formally es...

Reniac

rENIAC Inc. is a Santa Clara-based data acceleration company whose flagship product, the rENIAC Data Engine (rDE), is a drop-in accelerator for open source a...

Reno

Reno (Reno Home) is a Dubai, UAE based one-stop home renovation platform

RenoFi

RenoFi is a home-renovation financing platform that partners with credit unions and lenders to offer renovation-specific loans underwritten against a home's ...

Renoster Systems

'Renoster Systems is a carbon-credit ratings agency bringing deep transparency

Renotag, Inc.

Renotag, Inc. is a Calgary, Canada based construction-technology startup (founded 2020,

Renovate

Renovate is an open source automated dependency update bot maintained by Mend. It scans

Renoviso

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

Renren

'Renren (人人网), originally launched as Xiaonei in 2005 and renamed in 2009,

Rens Energy

Rens Energy is a Shanghai-based distributed energy-storage and energy-management

Rent Manager

Rent Manager is property management software with a REST API (WAPI12) for managing properties, tenants, leases, work orders, accounting, billing, and mainten...

Rent the Runway

'Rent the Runway is a New York-based fashion technology company operating

Rent-A-Center

Rent-A-Center is a lease-to-own retail company providing furniture, electronics, appliances, and computers through its Rent-A-Center stores and Acima (former...

Rentahuman

RentAHuman.ai is the marketplace where AI agents hire humans for physical-world tasks — errands, in-person meetings, field research, photography, deliveries,...

RentCast

RentCast provides a real estate data API with instant access to over 140 million property records, automated valuation models (AVM) for home value and rent e...

RentCheck

RentCheck is a resident-led property inspection platform used by 1,000+ property management companies to run guided move-in, move-out, routine, and maintenan...

Rentec Direct

Rentec Direct provides property management software with a REST API for managing rental properties, tenant screening, online payments, maintenance requests, ...

rentify

Rentify was a London-based property technology (PropTech) startup founded in 2011 that built

Rentle

Rentle, now operating as Twice Commerce, is a Helsinki-founded (2018) circular-commerce platform that lets merchants run rentals, resale, and subscriptions f...

Rentlytics

'Rentlytics was a multifamily real estate data analytics company founded in 2012 and headquartered

RentMineOnline

RentMineOnline was a San Francisco-based software-as-a-service company, founded in 2007,

Rentomojo

'Rentomojo is India''s largest tech-driven, full-stack direct-to-consumer

RentSpree

RentSpree is a Los Angeles-headquartered rental real estate technology platform that streamlines the long-tail rental transaction for real estate agents, lan...

Rentvine

Rentvine is a modern property management platform offering a fully open RESTful API for managing properties, leases, tenants, maintenance requests, financial...

Reolink

Reolink is a provider of security cameras and smart home surveillance technology. Their cameras offer an HTTP API that enables direct device control and conf...

Reonic

Reonic is a German climate-tech company (founded 2021, Augsburg) building an AI-powered operating system for renewable-energy installers. Its platform covers...

Reonomy

Reonomy (an Altus Group company) is a commercial real-estate property-intelligence

Reown

Reown (formerly WalletConnect) provides Web3 connection infrastructure

Repacket

'Repacket is an AI-native Secure Web Gateway (SWG) that makes endpoint

Repeat

Repeat is a lifecycle and retention marketing platform for consumer packaged goods (CPG) and e-commerce brands, now operated as a product of Stamped. It conn...

Repertoire Immune Medicines

'Repertoire Immune Medicines is a Cambridge, Massachusetts biotechnology company

Rephrase.ai

Rephrase.ai is a Bengaluru-based generative-AI startup whose text-to-video platform, Rephrase Studio, turns plain text scripts into videos of digital human a...

Replay

Replay is an AI-native QA and time-travel debugging platform for web applications. Replay QA autonomously explores a web app, records every session in a dete...

Replenysh

Replenysh is an enterprise circularity platform that runs circular supply chains for

Replica Studios

Replica Studios (operated by Replica Media Pty Ltd) built AI voice, text-to-speech (TTS) and speech-to-speech (STS) technology for creators, game developers,...

Replicant

Replicant is an enterprise agentic customer service platform that automates high-volume contact center conversations across voice, chat, and messaging, and a...

Replicas

Replicas (tryreplicas.com), a Y Combinator (Spring 2026) company, runs end-to-end background coding agents in isolated cloud sandboxes. Teams delegate engine...

Replicate

Replicate lets you run machine learning models in the cloud with a simple

Replicated

Replicated is a commercial software distribution platform that lets independent software vendors (ISVs) deliver and manage modern applications into complex, ...

Replicon

Replicon, now a Deltek company, is a time-tracking, project time and expense, and professional-services automation (PSA) platform. Its Time Intelligence Plat...

Replika

Replika is an AI companion mobile and web application built by Luka, Inc. that lets people create a personalized conversational AI "friend" for chat, emotion...

Replika

Replika is a consumer AI companion chatbot created by Luka, Inc., launched November 2017 and now serving 40+ million users. The product personalizes a neural...

Replit

Replit is a cloud-based development platform that lets you create, run, and deploy software directly from your browser. It provides instant, containerized en...

Reply.ai

Reply.ai was a conversational AI and customer-experience platform founded in 2016 in New York City, building software to automate repetitive customer-service...

Replyr.ai

Replyr.ai (Replyr Sdn Bhd, Kuala Lumpur, Malaysia) is an AI-powered customer engagement and lead-acquisition platform. It builds GPT-style chat assistants th...

Reporting Templates

Pre-built document templates for generating standardized reports, dashboards, and data presentations with consistent formatting and structure. Organizations ...

Reposit

Reposit is a UK-based PropTech and fintech company offering a deposit alternative for the residential rental market. Instead of paying a traditional cash dep...

Represent by Open North

"Find Canadian Government Representatives"

Reprise

Reprise is the leading enterprise demo automation platform that enables sales and marketing teams to create guided product tours, sandbox demos, and interact...

Repsly

Repsly is a retail execution and field sales platform for CPG brands and field teams - covering in-store activity, merchandising, retail audits, order taking...

Republic

'Republic is a New York-based fintech and private investing platform (republic.com)

Republic Project *

'Republic Project * is a company surfaced as a portfolio company of gv and added to the API

Republic Services

Republic Services is one of the largest providers of non-hazardous solid waste disposal, recycling, and environmental services in the United States. As a For...

RepublicProject

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

Reputation

Reputation is an AI-powered reputation performance platform providing a REST API for managing online reviews, social listening, business listings, surveys, a...

ReqBin

ReqBin is an online HTTP/REST API client for testing API requests directly from the browser without plugins or software installation. It supports all HTTP me...

ReqRes

ReqRes (reqres.in) is a hosted REST API originally launched by Ben Howdle as a free no-auth fake-API surface for AJAX prototyping, tutorials, and frontend te...

Requantive

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

Request Finance

Request Finance is a crypto and fiat invoicing, payments, and payroll platform that lets businesses issue invoices, accept payments in crypto and fiat, pay c...

Requests

Requests is a simple and elegant HTTP library for Python, designed for human beings. Published under the Apache2 license by the Python Software Foundation (P...

Requesty

Requesty is an LLM routing and gateway platform that exposes a single

Rerun

Rerun is an open-source data platform — "the unified data layer for physical AI" — for multimodal, multi-rate time-series data from robotics and computer vis...

Res

'Res (ResQ) is an AI-powered operations platform for the service economy, connecting

Rescale

Rescale is a high-performance computing (HPC) and simulation platform that gives R&D and engineering teams a unified, cloud-based environment to run modeling...

Rescripted

Rescripted is a digital women's health platform dedicated to empowering women across the entire lifecycle, from first period to last. It combines an editoria...

RescueGroups

"Adoption"

RescueGroups.org

RescueGroups.org provides the only updatable HTTP/JSON API for adoptable pet data, offering comprehensive search across animals, organizations, breeds, speci...

ResearchGate

'ResearchGate is a professional network and social platform for scientists and researchers,

Resemble AI

Resemble AI is a voice cloning, TTS, voice conversion, and voice agent platform. The Resemble REST API at https://api.resemble.ai exposes synchronous synthes...

Resend

Resend is a developer-first email API platform that simplifies sending

Reserv

Reserv is an insurance technology company and third-party administrator

Reserve *

Reserve was a restaurant-reservation startup backed by GV and surfaced in the API Evangelist network as a consumer-sector portfolio lead. Its domain reserve....

Reserve Requirements

Reserve Requirements refers to the Federal Reserve's Regulation D framework governing reserve requirement ratios for depository institutions. As of March 26,...

ReserveOut

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

Reservoir

NFT marketplace infrastructure and data API for aggregating listings, bids, and sales across OpenSea, Blur, and other markets — powers buying, selling, and a...

Reshop

'Reshop (Reshop US, Inc.) is a fintech company that provides instant refunds

Resideo Technologies

'Profile for Resideo Technologies in the API Evangelist network. Fortune F1000 (rank 548).'

Resilience

'Resilience is a company surfaced as a portfolio company of 8vc, crv, general-catalyst, gv,

Resilience

Resilience is a United States cyber-risk company that underwrites cyber insurance and technology errors-and-omissions coverage while running the security ana...

Resilience4j

Resilience4j is a lightweight fault tolerance library designed for Java 17+ and functional programming, providing higher-order functions to enhance functiona...

Resilient Power Systems

Resilient Power Systems is a power-electronics hardware company known for solid-state

Resilinc

Resilinc is a cloud/SaaS-based supply chain risk management platform that provides REST APIs for accessing supply chain data, disruption events, supplier ris...

Resistant AI

Resistant AI protects financial-services organizations from fraud and financial crime with AI. Its Documents product detects fake, tampered, forged, and AI-g...

Resmed

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

ReSmush.it

"Photo optimization"

Resolute Forest Products

Resolute Forest Products is a global leader in the forest products industry, producing market pulp, tissue, wood products, and newsprint. Formerly one of the...

Resolute Ventures

'Resolute Ventures is an early-stage venture capital firm that typically

Resolution Games

'Resolution Games is a Stockholm-based studio building games for virtual,

Resolve

Resolve is a B2B commerce and payments platform that lets businesses offer flexible net terms (typically NET 30-60) to their buyers without carrying the cred...

Resolve AI

'Resolve AI builds AI agents (an "AI SRE") that run production software

Resolve Systems

Resolve Systems (resolve.io) is an enterprise IT automation and AIOps platform that helps IT and operations teams automate incident resolution, service-desk ...

Resolyst

Resolyst is a specialty-care platform that positions itself as the intelligence

Reson8

Reson8 (Resonate Labs B.V.) is a Balderton Capital-backed speech-recognition company offering an infrastructure-grade automatic speech recognition (ASR) API....

Resonado Labs

'Resonado Labs is a high-velocity innovation and hardware development lab focused on

ResortPass

'ResortPass is a consumer travel and hospitality marketplace that lets

Resourcely

Resourcely is an a16z-backed company reachable at resourcely.io, surfaced as a portfolio lead and added to the API Evangelist network for enrichment. Its pub...

ResourceWise

ResourceWise is a market intelligence company for sustainable commodities, delivering data, analytics, pricing benchmarks, forecasts, and consulting across t...

Resourcify

Resourcify (Resourcify GmbH) is a Hamburg, Germany based digital platform for waste management and circular-economy operations, describing itself as "the ope...

Resourcly

Resourcly is an AI-powered platform for deep inventory optimisation across manufacturing. It harmonises fragmented PLM and ERP parts data, finds duplicate an...

Respeecher

Respeecher is an AI voice company known for high-fidelity speech-to-speech (STS) voice conversion and text-to-speech (TTS) used across film, television, game...

Respond.io

Respond.io is an AI-powered customer-conversation management platform that

Respondus

Respondus builds assessment-integrity tools for online exams - most

Responsiv

'Responsiv is an AI-powered regulatory intelligence and compliance platform

Responsys

Oracle Responsys (Oracle Responsys Campaign Management) is a B2C cross-channel marketing orchestration platform, originally founded as Responsys and acquired...

Ressl

Ressl (ressl.ai) is a Y Combinator-backed platform that provisions hosted mock SaaS APIs for AI agents and evaluations. Its control-plane API lets you list t...

REST

REST (Representational State Transfer) is an architectural style for designing networked applications, defined by Roy Fielding in his 2000 doctoral dissertat...

REST API

Representational State Transfer (REST) is an architectural style for designing networked applications using standard HTTP methods and stateless communication...

REST Assured

REST Assured is a Java library for simplifying the testing and validation of RESTful APIs. It provides a fluent domain-specific language (DSL) built on the g...

REST Client

REST Client is a Visual Studio Code extension developed by Huachao Mao that enables developers to send HTTP requests and view responses directly within the V...

REST Countries

REST Countries is a free, open-source RESTful API that returns rich country reference data — ISO 3166-1 codes (cca2, cca3, ccn3, cioc), common/official and n...

REST Countries

Free REST API providing comprehensive data about world countries including name, capital, currencies, languages, flags, population, and geographic informatio...

REST Services

Representational State Transfer (REST) is an architectural style for designing networked applications using stateless communication and standard HTTP methods...

Restack

Restack is an enterprise AI agent platform and backend framework for building accurate, reliable, and scalable AI products. It provides durable workflow orch...

RestAR

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

Restate

Restate is a low-latency durable execution engine for building resilient applications that tolerate all infrastructure faults. It provides durable execution ...

Restate

Restate is a durable execution platform for building resilient distributed applications, microservice orchestration, durable workflows, stateful services, an...

Restaurant Brands International

Restaurant Brands International (RBI, NYSE: QSR) is one of the world's largest quick service restaurant companies, with nearly $45 billion in annual system-w...

Restaurant365

Restaurant365 is a cloud-based restaurant accounting, inventory, and operations platform serving thousands of restaurant locations across the United States. ...

Restfox

Restfox is an offline-first, minimalistic HTTP and socket testing client for the web and desktop. It is an open-source alternative to Postman, supporting HTT...

RESTful

Representational State Transfer (REST) is an architectural style for designing networked applications using stateless HTTP communication and uniform interfac...

RESTful APIs

Representational State Transfer (REST) is an architectural style for designing networked applications. RESTful APIs use HTTP methods to perform CRUD operatio...

RESTful Microservices

An architectural style that structures an application as a collection of loosely coupled, independently deployable services that communicate via REST APIs us...

RESTful Services

Representational State Transfer (REST) services are web services built using the REST architectural style, which uses stateless HTTP communication and standa...

RESTful Web Services

RESTful web services are web services built using the Representational State Transfer (REST) architectural style, using HTTP as the transport protocol with s...

Resti Inc.

'Resti Inc. (resti.cloud) is a cloud-based restaurant management platform

Restless

'Restless is a company surfaced as a portfolio company of qed-investors and added to the

Restorando

'Restorando was a Latin American online restaurant-reservation platform (Argentina, Brazil,

Restpack

"Provides screenshot, HTML to PDF and content extraction APIs"

Restream

Restream is a multistreaming platform that enables content creators and businesses to simultaneously broadcast live video to 30+ platforms including YouTube,...

RestSharp

RestSharp is a simple REST and HTTP API client library for .NET that wraps HttpClient with a fluent API for making HTTP requests with automatic serialization...

Result

Result is a Y Combinator (Spring 2026) all-in-one business operating system that lets internet entrepreneurs start and run companies end-to-end. The platform...

Resulticks

Resulticks is a next-generation, data-driven omnichannel marketing automation and audience engagement platform built for real-time customer engagement. Opera...

Resultid

Resultid is an enterprise Operational Intelligence platform that connects what customers say, what teams do, and what operational data shows across every pro...

Resurface

Resurface (now Graylog API Security) is an API runtime security and observability platform that captures and analyzes complete API request and response paylo...

ResWare

ResWare is customizable title and escrow production software for real estate

Resy

Resy is a restaurant reservation and discovery platform owned by American Express. Resy does

Retail Solutions

'Retail Solutions is a company surfaced as a portfolio company of bessemer-venture-partners

Retailigence

Retailigence is a retail technology company that applies artificial intelligence and machine

RetailMeNot *

'RetailMeNot is a consumer savings destination that aggregates coupons, promo

RetailNext

RetailNext is an AI-powered in-store retail analytics platform that helps physical retailers understand shopper behavior and optimize store operations. Its p...

Retailo

Retailo (Retailo Technologies) operates a B2B marketplace that helps independent retailers across the MENAP region (Middle East, North Africa and Pakistan) r...

RetainIQ

'RetainIQ is a full-service retention-marketing agency for direct-to-consumer

Retell AI

Retell AI is a platform to build, test, and deploy AI voice agents for

Retell AI

Retell AI provides voice AI infrastructure for building conversational agents with low-latency turn detection, interruption handling, tool calling, knowledge...

RethinkDB

RethinkDB is an open source, distributed document-oriented NoSQL database designed for real-time applications, with push-based change feeds, native JSON stor...

RetLiq

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

Retool

Retool is a low-code platform for building internal tools, dashboards,

Retraced

Retraced is an AI-first supply chain transparency and compliance platform for the fashion and textile industry. It helps brands and suppliers manage multi-ti...

reTravel.io

reTravel.io is a travel retention marketing platform that uses data science

Retrocausal

Retrocausal builds AI-powered copilot software for manufacturing operations, applying patented computer vision and machine learning to manual assembly lines....

Retrofit

Retrofit is a type-safe HTTP client for Android and the JVM (Java and Kotlin) built by Square, turning HTTP API interfaces into callable Java objects with an...

Rette

Rette AI is a revenue cycle management (RCM) platform for small specialty

Return Path

Return Path is an email-deliverability and inbox-intelligence brand that pioneered sender reputation, inbox-placement monitoring, and email fraud protection ...

Returnly

'Returnly was a fintech-flavored e-commerce returns and exchanges platform (Returnly Green

Retym

Retym is a company surfaced as a portfolio company of mayfield and added to the API Evangelist

Reuters

Global news organization providing breaking news, business, financial,

Rev AI

Rev AI is a speech recognition and transcription API platform from Rev.com that delivers high-accuracy AI-powered speech-to-text for pre-recorded audio and r...

REV Group

'Profile for REV Group in the API Evangelist network. Fortune F1000 (rank 892).'

Rev1

Rev1 (REV1, Inc.) is a Y Combinator (Winter 2026) startup building an AI-powered platform that automatically converts 3D CAD models into fully annotated, pro...

Revalia Bio

'Revalia Bio transforms donated, non-transplantable human organs and tissues

RevContent

RevContent is a performance-driven native advertising and content recommendation

Reveal

Reveal is a company surfaced as a portfolio company of insight-partners and added to the

Reveal Imaging

Reveal Imaging (Reveal Imaging Technologies) is a security-screening hardware company

Revefi

Revefi is an AI-powered data operations platform that delivers FinOps, observability, and optimization for modern data warehouses and AI/LLM workloads. Its z...

Revel Ai Health

RevelAi Health is a healthcare technology company building a conversational

Revel Systems

Revel Systems is an iPad-based point-of-sale platform for restaurants and retail businesses. Its REST API provides programmatic access to menus, orders, inve...

Revel Systems

Revel Systems is a cloud iPad-based POS for restaurants and retailers. The Revel Open API exposes products, orders, customers, employees, inventory, schedule...

Revelator

Revelator is a music distribution and rights, royalties, and payments

Revelio Labs

Revelio Labs is a workforce intelligence company that builds a universal HR database from public professional profiles, job postings, employee reviews, and W...

Revenue.io

Revenue.io is a revenue intelligence platform offering real-time guidance,

RevenueBase

RevenueBase is a B2B data infrastructure platform — "the trust layer for B2B data" — providing 390M+ continuously verified contacts and 60M+ companies delive...

RevenueCat

RevenueCat provides in-app subscription and purchase infrastructure for

Rever Moto

REVER (Rever Moto) is a motorcycle-focused navigation, ride-tracking, and social platform for riders. It offers a web-based route planner and mobile apps (iO...

Reverb

Reverb is a marketplace for musicians to buy and sell new, used, and vintage musical instruments

Reverie

'Reverie is an early-stage venture capital firm based in New York that invests

Reverie Travel, Inc

Reverie Travel, Inc is a company surfaced as a portfolio company of 500-global and added

Revert

Revert is an open-source unified API platform that makes it easy to build product integrations 10x faster. It provides a single standardized API to integrate...

Revert

Revert is an open-source unified API for building product integrations.

Revert

Revert is an open-source unified API for building product integrations.

Revibe

Revibe (Revibe Technology FZ-LLC) is a UAE-based e-commerce marketplace for certified refurbished and renewed electronics — iPhones, Samsung phones, MacBooks...

Revie

Revie is an AI-powered customer review collection and WhatsApp marketing

REVIEWS.io

REVIEWS.io is a product and company reviews and user-generated content

ReviewTrackers

ReviewTrackers is an online reputation management platform that enables businesses to monitor reviews across 100+ review sites, respond to customer feedback,...

Revion

Revion builds an AI-powered operating system for automotive retail service operations. Its voice-first platform lets dealership technicians dictate repair in...

Revivant

Revivant is a medical device company that develops and markets proprietary technology to

Revivn

Revivn provides an integrated hardware lifecycle platform for managing end-of-life IT equipment. The company handles secure device pickup, certified data san...

Revlon

Revlon is a global beauty company whose portfolio spans color cosmetics, fragrance, skin care, hair color, hair care, beauty tools, and antiperspirants / deo...

Revnu

Revnu is an AI-powered growth-automation platform for early-stage and technical

Revolt

"Revolt open source Discord alternative"

Revolut

Revolut is a global financial technology company providing banking, payments, cards, foreign exchange, savings, and crypto services to retail and business cu...

Revolutio

Revolutio provides smart structural engineering software and a Hazard API (formerly CHECKWIND.API) that delivers site-specific wind, snow, ice, and seismic l...

Revolution Medicines

'Revolution Medicines is a clinical-stage precision oncology company headquartered

Revolution Precrafted

Revolution Precrafted is a Manila, Philippines-based prefabricated design

Revolution RE

Revolution RE (RevRE) is a data intelligence platform for the multifamily real estate industry. It transforms disconnected property, operational, and financi...

Revolv

Revolv was a smart-home company that built a connected home hub and mobile

Revolving Games

'Revolving Games is a mobile-first game studio and publishing company

Revv

Revv (formerly RevvSales) is a document automation and electronic-signature platform that helps businesses prepare, automate, and execute business paperwork ...

Revvity

Revvity is a life sciences and diagnostics company providing instruments, software, reagents, and services to support drug discovery, development, diagnostic...

Revvo

Revvo is an AI-powered tire and fleet management platform. Its TireIQ engine connects to OEM and aftermarket TPMS sensors and turns raw tire data into real-t...

Revyze

Revyze is a French EdTech mobile learning application that helps secondary and baccalaureate-level students revise by scrolling short-form educational videos...

Rewardful

SaaS affiliate and referral tracking platform with a REST API for managing campaigns, affiliates, referrals, and Stripe-integrated commission payouts.

Rewardly

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

Rewatch

Rewatch is a company surfaced as a portfolio company of a16z and added to the API Evangelist

Rewind

'Rewind is an Ottawa-based SaaS data backup and recovery company that provides

Rewst

Rewst is a workflow automation and integration (iPaaS/RPA) platform built specifically for managed service providers (MSPs). It combines a visual workflow bu...

Rex

'Rex is a company surfaced as a portfolio company of accel and added to the API Evangelist

Rex Inc

Rex Inc, operating as Rex.fit (BabylonAI Inc.), is a Y Combinator (W23) health and fitness company building AI-powered, fully automated nutrition tracking. I...

Rexby

Rexby is a consumer travel discovery and trip-planning platform where local creators

Rexnord

Rexnord was a global industrial company headquartered in Milwaukee, Wisconsin, with two strategic platforms — Process and Motion Control (bearings, couplings...

Reynolds American

Reynolds American Inc. is the second-largest tobacco company in the United States and a subsidiary of British American Tobacco (BAT). Its subsidiaries includ...

Reynolds and Reynolds

Reynolds and Reynolds is one of the automotive industry's largest Dealership Management System (DMS) providers, running the ERA-IGNITE and POWER platforms th...

Rezilient Health

Rezilient Health is an employer-sponsored primary and specialty care provider that combines physical CloudClinics with telehealth to deliver unlimited, zero-...

Rezo

Rezo.ai is an enterprise customer-experience (CX) company building a unified, agentic-AI contact-center platform. Founded in 2018 in Noida, India by Dr. Rash...

Rezonant

Rezonant is a London-based product development workspace, founded by former Stripe UK engineering leader Emma Burrows, that captures product intent and carri...

Rf Surgical

'Rf Surgical (RF Surgical Systems) was a medical-device company in the surgical patient-safety

RFID

Radio-Frequency Identification (RFID) is an automatic identification technology that uses radio waves to read and capture information stored on a tag attache...

Rfmd

'RFMD (RF Micro Devices) was a semiconductor manufacturer of radio-frequency

RH

'Profile for RH in the API Evangelist network. Fortune F1000 (rank 850).'

Rhapsody

Rhapsody Health Solutions is a US-headquartered (Boston, Massachusetts) healthcare interoperability company trusted by more than 1,900 healthcare organizatio...

Rheaply

Rheaply is a circular-economy platform for enterprise asset lifecycle management. It gives organizations real-time inventory visibility, an internal reuse ma...

Rhetoric

Rhetoric is a company surfaced as a portfolio company of bloomberg-beta and added to the

Rhizome Ai

Rhizome AI is an AI-powered regulatory research platform for pharmaceutical and medical device companies. It lets regulatory affairs teams ask questions and ...

Rho

Rho is an all-in-one finance platform for businesses that combines business banking, treasury, corporate cards, expense management, bill pay, invoicing, and ...

Rho Protocol

Rho Protocol (Rho Labs) operates Rho X, a decentralized multi-asset trading and settlement layer for on-chain capital markets — interest-rate futures, perpet...

Rhoda Ai

Rhoda AI develops robotic intelligence for real-world industrial and commercial

Rhumbix

Rhumbix is a field-first workforce management platform for construction that consolidates timekeeping,

RhyGaze

'RhyGaze is a clinical-stage biotechnology company developing gene therapy

Rhyme (fka PriorAuthNow)

'Rhyme (formerly PriorAuthNow) is a healthcare technology company that eliminates

Rhythmos

Rhythmos (rhythmos.io) provides modern analytics for managing electric-vehicle charging and grid infrastructure. Its platform coordinates fleet charging need...

Rhythms

Rhythms is an AI operating partner for teams, built by the team behind Ally.io and Microsoft Viva Goals. It automates business reviews, pre-briefs, reports, ...

Riak KV

Riak KV is a distributed NoSQL key-value database originally developed by Basho Technologies, designed for high availability, fault tolerance, and horizontal...

Rialo

'Rialo is an early-stage Layer 1 blockchain building high-throughput infrastructure

Ribbit Capital

Ribbit Capital is a venture capital firm founded in 2012 by Micky Malka and headquartered in Palo Alto, California, investing globally in founders who challe...

Ribbon Finance

Ribbon Finance is a DeFi structured products platform that helps users

Ribbon Health

Ribbon Health (now part of H1) is a healthcare provider data platform offering a REST API for searching provider directories, verifying insurance networks, c...

Rice University

Rice University is a private research university in Houston, Texas, ranked #141 in the QS World University Rankings 2025. Its public developer/API footprint ...

Ricerca Biosciences

'Ricerca Biosciences is a company surfaced as a portfolio company of bain-capital-ventures

Rick and Morty

"All the Rick and Morty information, including images"

Rick and Morty API

Free REST and GraphQL API providing data about characters, locations,

Ricoh USA

Ricoh USA is the United States operating company of Ricoh Co., Ltd. — a global imaging, printing, document services, and workplace technology vendor. Beyond ...

Ricursive

Ricursive (Ricursive Intelligence) is a frontier AI lab building self-improving

Ricursive Intelligence

Ricursive Intelligence is a frontier AI laboratory building self-improving systems to reinvent chip design, closing the loop between artificial intelligence ...

Ridecell

Ridecell is an AI-powered asset intelligence and orchestration platform for automotive leasing, fleet, and finance companies. Its five intelligence modules (...

Riff

'Riff is an Oslo, Norway based enterprise software company building AI

Rift

Rift is a decentralized exchange (DEX) aggregator that routes swap orders across 20+ trading venues and cross-chain bridges to guarantee best-price execution...

Rig Veda

"Gods and poets, their categories, and the verse meters, with the mandal and sukta number"

Rigetti & Co

Rigetti Computing (Rigetti & Co) is a full-stack quantum computing company that builds superconducting

Rigetti Computing

Rigetti Computing (Nasdaq, RGTI) is a Berkeley, California-based quantum computing company building superconducting quantum processors and the full-stack sof...

Rigetti Computing

Rigetti Computing is a full-stack quantum computing company that builds superconducting quantum processors and delivers access to them through Quantum Cloud ...

Riggs Distler

Riggs Distler & Company is an energy and utility infrastructure construction firm operating since 1909. Now part of Centuri Group, the company delivers elect...

Right Hear

Right Hear (RightHear) is an accessibility technology company, backed by Techstars, that helps people who are blind, have low vision, or face orientation and...

Right Media

Right Media is a company surfaced as a portfolio company of redpoint-ventures and added to

RightHand Robotics

'RightHand Robotics builds autonomous piece-picking robotic systems for

RightNow AI

RightNow AI (RunInfra) turns plain-English descriptions of an inference workload into production, OpenAI-compatible AI endpoints. The platform selects open-s...

Rightpoint

Rightpoint is a global experience consultancy, now fully integrated into the Genpact brand, that designs and builds customer and employee experiences for ent...

Rightrev

RightRev is an AI-powered revenue recognition platform that automates ASC 606 and IFRS 15 compliant accounting for subscription, usage-based, and hybrid reve...

Rightsline

Rightsline is the leading rights and royalties software platform for media, entertainment, and content businesses. Its REST API enables real-time integration...

Rightway Healthcare

Rightway Healthcare is a healthcare navigation and pharmacy benefits management (PBM) company

Rigi

'Rigi (Rigi TV) is an instant-entertainment mobile app that streams quick,

Riide

Riide manufactures connected electric bicycles combining a street-legal 500W ebike

Riiico

RIIICO is a Duesseldorf-based industrial software company building 3D-AI

Riiid

Riiid (now operating as Socra AI) is an AI education technology company

Rijksmuseum

Rijksmuseum is the Dutch national museum dedicated to Dutch arts and history, located in Amsterdam. Its RijksData open-data programme exposes more than 800,0...

Rill Data

Rill Data builds Rill, an operational business-intelligence tool for fast, exploratory dashboards on large event and time-series data. Developers connect dat...

Rilla

'Rilla is an AI conversation-intelligence and coaching platform built for in-person

Rillet

Rillet is an AI-native, cloud enterprise resource planning (ERP) and general-ledger platform built for modern finance teams. It automates core accounting wor...

Rimac

Rimac Group is a Croatia-based holding company bringing together exclusive hypercars and advanced electrification technology. Its portfolio spans Bugatti Rim...

Rime

Rime is a realtime text-to-speech platform optimized for low-latency conversational agents. Models include Arcana v3, Arcana v2, Mist v3, and Mist v2. The TT...

Rimini Open Data

Rimini Open Data is a municipal government open-data portal for Italy running CKAN. It exposes the CKAN catalog API over approximately 72 datasets.

Rimsys

'Rimsys is a Regulatory Information Management (RIM) platform purpose-built for medical

Rindler

Rindler is a Y Combinator (Summer 2026) company that operates a hosted Model Context Protocol (MCP) server turning any pre-onboarded website — including site...

Ring

Ring is an Amazon home-security company (doorbells, cameras, alarm systems, and the Ring Protect subscription) that in 2026 launched the Ring Developer platf...

Ring Radar

Ring Radar is horse show management software for the equestrian industry,

RingCaptcha (ThriveCom)

RingCaptcha, operated by ThriveCom, is a phone-verification and two-factor authentication (2FA) platform that helps businesses confirm real users and block f...

RingCentral

RingCentral provides unified cloud communications for businesses including voice, video, messaging, contact center, and events. The RingCentral API exposes c...

RingCentral Events

RingCentral Events (formerly Hopin) is a virtual and hybrid event management platform with REST APIs for managing organizations, events, sessions, stages, bo...

RingDNA

RingDNA (now Revenue.io) is an intelligent revenue platform providing REST APIs for sales dialing, call recording, conversation analytics, real-time coaching...

Ringly

Ringly (ringly.io) provides AI-powered phone support built specifically for Shopify e-commerce brands. Its AI voice agent, "Seth," answers customer service c...

Rinse

'Rinse is a laundry and dry cleaning delivery service that picks up customers''

Rio Tinto

Rio Tinto is a British-Australian multinational mining and metals corporation and one of the world's largest producers of iron ore, aluminum, copper, and dia...

Riot Games

Riot Games provides a comprehensive developer platform for accessing

RIPA AI

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

Ripcord

'Ripcord is a document digitization and data-extraction company that uses proprietary robotics

Ripe Insurance

Ripe Insurance Services Limited, trading as Ripe and part of Ripe Thinking

Ripio

Ripio is a Latin American cryptocurrency exchange founded in 2013, offering crypto trading, stablecoins, DeFi products, a Visa crypto card, and B2B infrastru...

Ripl

Ripl is a social media marketing platform for small businesses, helping owners create, schedule, and publish engaging content across Instagram, Facebook, Tik...

Rippl

Rippl (Rippl Care, now part of Harbor Health) is a value-based, technology-enabled dementia and senior behavioral-health care provider backed by General Cata...

Rippl Care *

'Rippl (Rippl Care) is a specialty healthcare company delivering value-based, virtual-first

Ripple

Ripple is a company surfaced as a portfolio company of 500-global, lightspeed-venture-partners

Ripple Foods

'Ripple Foods is a plant-based beverage company that manufactures dairy-free milk alternatives

Ripple Labs

'Ripple (legally Ripple Labs Inc.) is a blockchain and crypto-enabled financial