Y Combinator is the most influential startup accelerator in the world, founded in 2005 by Paul Graham, Jessica Livingston, Robert Tappan Morris, and Trevor B...
Y&S is the company behind ReservaTurno, an Argentine consumer appointment-booking platform (active circa 2014-2023) that let users reserve turnos at hair sal...
Y42 is a managed DataOps platform ("Gitful data ops") that runs production-ready data pipelines on top of Snowflake and BigQuery, combining managed Airbyte i...
Yaak is an open-source desktop API client for organizing and executing REST, GraphQL, WebSockets, Server Sent Events, and gRPC requests. Built with Tauri, Ru...
Yacob was a Dubai-based Intelligent Nutrition platform and 500 Global portfolio company that combined cashless school-meal payments with nutrition monitoring...
Yahoo is a consumer internet and advertising-technology company operating Yahoo Mail, Yahoo Finance, Yahoo Sports and Yahoo Search alongside one of the large...
Yale University is a private Ivy League research university in New Haven, Connecticut, United States, ranked #16 in the QS World University Rankings. Its pro...
Yalo is an intelligent sales platform that uses AI agents to help consumer brands sell through conversational channels like WhatsApp, mobile apps, and phone ...
Yammer is a company surfaced as a portfolio company of emergence-capital and added to the API Evangelist network as a stub for enrichment. Sector: enterprise...
Yampa is a Paris-based B2B platform for deploying and operating fleets of autonomous AI agents that handle customer service end-to-end across voice, chat, em...
Yana is an AI-powered emotional companion app (published by Yana App, S.A.P.I. de C.V., a 500 Global portfolio company) that gives millions of Spanish and En...
Yandex Translate is a machine translation REST API from Yandex that supports 100+ languages. It provides text translation between any supported language pair...
YankeeTek is a company surfaced as a portfolio company of battery-ventures and added to the API Evangelist network as a stub for enrichment. This profile is ...
Yanolja is a company surfaced as a portfolio company of softbank-vision-fund and added to the API Evangelist network as a stub for enrichment. Sector: consum...
Yanyin Technology (衍因科技) is a Shanghai-based biomedical AI company building 衍因智研云 (Yanyin Zhiyun), a digital research-collaboration platform for life-science...
Yao Hu Town is a company surfaced as a portfolio company of idg-capital and added to the API Evangelist network as a stub for enrichment. Sector: consumer-te...
Yaoshibang is a company surfaced as a portfolio company of dcm-ventures and added to the API Evangelist network as a stub for enrichment. Sector: enterprise....
Yapily is a UK-headquartered Open Banking platform that exposes a single REST API across 2,000+ banks in the UK and 18+ European countries. The platform prov...
YapStone is a company surfaced as a portfolio company of accel and added to the API Evangelist network as a stub for enrichment. Sector: payments. This profi...
Yapta is a company surfaced as a portfolio company of version-one-ventures and added to the API Evangelist network as a stub for enrichment. This profile is ...
Yard Club is a company surfaced as a portfolio company of a16z and added to the API Evangelist network as a stub for enrichment. This profile is a lead await...
Yardbook is a company surfaced as a portfolio company of y-combinator and added to the API Evangelist network as a stub for enrichment. This profile is a lea...
Yardi Systems, Inc. (Goleta, California) builds the investment and property management software that residential, commercial, affordable housing, public hous...
Yardi Canada Ltd. is the Canadian subsidiary of Yardi Systems, Inc. (Goleta, California), opened in Mississauga in 1998 and now headquartered in Toronto with...
Yardi Propware was the original flagship property management software by Yardi Systems, first released in 1984. It was an early desktop-based real estate man...
Yardlink is a company surfaced as a portfolio company of speedinvest and added to the API Evangelist network as a stub for enrichment. This profile is a lead...
Yards Brewing Company is an independent craft brewery founded in 1995 and headquartered in Philadelphia, Pennsylvania. Yards operates a brewery and taproom a...
YARN (Yet Another Resource Negotiator in the original Hadoop context; also the JavaScript package manager) refers here to the yarnpkg.com JavaScript package ...
Yarn is an open-source JavaScript package manager and project manager originally created at Facebook in 2016 and now developed as a fully independent communi...
YAS is a company surfaced as a portfolio company of 500-global and added to the API Evangelist network as a stub for enrichment. This profile is a lead await...
Yaskawa Electric Corporation is a Kitakyushu, Japan industrial automation company and the world's largest manufacturer of AC servo motors and motion controll...
Yasmina Holdings Limited is a company surfaced as a portfolio company of 500-global and added to the API Evangelist network as a stub for enrichment. This pr...
Yaspa is a company surfaced as a portfolio company of techstars and added to the API Evangelist network as a stub for enrichment. This profile is a lead awai...
Yassir is an Algerian-founded super app providing on-demand and financial services across the Maghreb, sub-Saharan Africa, Canada, and France. Founded in 201...
Yatra is a company surfaced as a portfolio company of norwest-venture-partners and added to the API Evangelist network as a stub for enrichment. Sector: unkn...
Yavin is a company surfaced as a portfolio company of seedcamp and added to the API Evangelist network as a stub for enrichment. This profile is a lead await...
Yaya Pass, Inc. is a company surfaced as a portfolio company of 500-global and added to the API Evangelist network as a stub for enrichment. This profile is ...
Yaydoo is a company surfaced as a portfolio company of 500-global and added to the API Evangelist network as a stub for enrichment. This profile is a lead aw...
YayPay is a company surfaced as a portfolio company of 500-global, techstars and added to the API Evangelist network as a stub for enrichment. This profile i...
Yaysay is a company surfaced as a portfolio company of lightspeed-venture-partners and added to the API Evangelist network as a stub for enrichment. This pro...
Yazaki Corporation is a Japanese global Tier 1 automotive supplier headquartered in Tokyo. Yazaki is a leading manufacturer of automotive wiring harnesses, c...
YAZIO GmbH is an Erfurt, Germany based digital health company whose nutrition app pairs calorie and macro tracking with barcode scanning, AI photo food loggi...
YCVC W14 is a company surfaced as a portfolio company of a16z and added to the API Evangelist network as a stub for enrichment. This profile is a lead awaiti...
Yealthy is a company surfaced as a portfolio company of 500-global and added to the API Evangelist network as a stub for enrichment. This profile is a lead a...
Yearn Finance is a DeFi yield aggregator that automates yield farming strategies across EVM-compatible networks. It provides REST and GraphQL APIs for access...
YearOne is a company surfaced as a portfolio company of techstars and added to the API Evangelist network as a stub for enrichment. This profile is a lead aw...
Yeeld builds credit-card surcharging infrastructure for merchants and platforms across the United States and Canada, and provides payments consulting and dev...
Yello is a Chicago-based talent acquisition software company, founded in 2008 (originally Recsolu), whose enterprise platform runs campus and early-career re...
Yellow is a company surfaced as a portfolio company of a16z and added to the API Evangelist network as a stub for enrichment. This profile is a lead awaiting...
Yellow Ai is a company surfaced as a portfolio company of lightspeed-venture-partners and added to the API Evangelist network as a stub for enrichment. This ...
Yellow Card is a company surfaced as a portfolio company of polychain and added to the API Evangelist network as a stub for enrichment. Sector: exchange. Thi...
Yellow.ai is a company surfaced as a portfolio company of sapphire-ventures and added to the API Evangelist network as a stub for enrichment. Sector: ai. Thi...
Yellowbrick Data is a company surfaced as a portfolio company of gv, ivp, menlo-ventures, threshold-ventures and added to the API Evangelist network as a stu...
YellowBrink is a Netherlands-based, vendor-neutral community platform for open health data, founded by Jan de Lange and Bouwe Koopal to connect healthcare pr...
YellowPad is a company surfaced as a portfolio company of 500-global and added to the API Evangelist network as a stub for enrichment. This profile is a lead...
Yelp connects people with great local businesses. The Yelp Fusion API gives developers programmatic access to Yelp's database of millions of local businesses...
Yes Energy is a Boulder, Colorado power market data company serving the North American wholesale electricity markets — the seven ISOs and RTOs (ERCOT, PJM, M...
Yesbank is a company surfaced as a portfolio company of norwest-venture-partners and added to the API Evangelist network as a stub for enrichment. Sector: un...
YesGraph was a San Francisco startup (YC W13) that provided a referral and contact-recommendation API. Its HTTP API and SDKs let mobile and web apps upload a...
YeshID is an AI-native workforce identity and access control platform that helps IT and security teams understand, govern, and automate access across fragmen...
YESMRO (易买工品), operated by Shanghai Sheti Information Technology Co., Ltd. and founded in April 2016, is a self-operated Chinese B2B e-commerce platform for ...
YesPath was an account engagement platform based in San Francisco that helped B2B sales and marketing teams reach and win large target accounts, using machin...
Yesware is a sales engagement and email productivity platform that lives inside Gmail and Outlook, helping sales teams track email opens, link clicks, and at...
Yetcargo is a Mexican freight and cargo transportation company that connects businesses needing to move goods with a network of reliable carriers, handling b...
Yext is a digital presence platform that enables businesses to manage their listings across 200+ publishers, update location data, manage reviews, and power ...
YGOPRODeck is a community-run Yu-Gi-Oh! TCG database and deck-sharing platform that exposes a free, public REST API (v7) for querying every Yu-Gi-Oh! card, a...
Yield Guild Games (YGG) is a decentralized autonomous organization (DAO) and one of the world's first and largest web3 gaming guilds, founded in 2020 by Gabb...
Yield Protocol was a decentralized Ethereum protocol that brought fixed-rate, fixed-term borrowing and lending to DeFi via collateralized debt vaults and its...
Yield.xyz (formerly StakeKit) is a non-custodial, on-chain yield infrastructure API that lets wallets, custodians, exchanges, and AI agents integrate staking...
Yieldify is a website personalization and conversion rate optimization (CRO) platform for ecommerce brands, founded in 2013 in London by Jay Radia and backed...
Yieldmo is a programmatic native advertising marketplace and smart exchange that differentiates and enhances the value of ad inventory for buyers and sellers...
Yingli Energy Development Co., Ltd. (Yingli Solar) is one of the earliest companies in China to commit to the photovoltaic industry, operating as an integrat...
YipitData is a market-intelligence and alternative-data company that delivers daily insights on consumer behavior, market share, pricing, and company perform...
ylhyoil is an upstream oilfield services provider backed by Qiming Venture Partners, serving traditional and unconventional reserves across domestic and over...
Ylookup is a London-based fintech (founded 2025, EQT Ventures-backed) building an agentic workflow engine for fund administration, corporate services, tax, a...
Ÿnsect (Ÿnsect SAS) was a French agri-technology company, founded in Évry, Essonne on 4 October 2011 by Antoine Hubert, Jean-Gabriel Levon, Fabrice Berro and...
YoFio is a Mexican fintech founded in 2019 that provides working-capital credit to micro and small businesses, particularly neighborhood corner stores (tiend...
yoaa is a company surfaced as a portfolio company of qiming and added to the API Evangelist network as a stub for enrichment. This profile is a lead awaiting...
Yoast is the maker of the world's most popular WordPress SEO plugin, active on over 13 million sites, and is part of Newfold Digital. Yoast provides develope...
Yoco is a South African fintech providing card acceptance and payments infrastructure for small and medium businesses - card machines, point of sale, and onl...
Yodeck is a cloud-based digital signage platform for managing screens and content at scale, typically on Raspberry Pi based players. It lets teams upload and...
YoDerm was a consumer telehealth company operating an online dermatology platform that let patients upload photos and a medical questionnaire, receive a pers...
Yodle was a New York-based local online marketing and lead-generation company for small and medium-sized businesses, offering all-in-one advertising, web pre...
Yodlee (Envestnet | Yodlee) is a financial data aggregation platform providing unified API access to bank accounts, credit card transactions, investments, lo...
Yogaia is a Finnish online fitness company, founded in 2013 and headquartered in Espoo, that streams live and on-demand yoga, Pilates, meditation, and workou...
Yokohama City Open Data is a municipal government open-data portal for Japan running CKAN. It exposes the CKAN catalog API, a standardized machine-readable i...
Yokoy (now part of Perk / TravelPerk) is an AI-powered spend-management platform for expenses, supplier invoices and corporate cards. Its public REST API (Op...
YOLOrekt is a social, hyper-gamified DeFi prediction-markets dApp where users bid on the short-term future price of crypto assets such as ETH, BTC, and MATIC...
Yonder is a UK-based financial technology company offering rewards credit and debit cards — a "financial membership" that earns points on everyday spending, ...
Yonsei University (연세대학교) is a private research university in Seoul, South Korea, founded in 1885 and one of the "SKY" institutions. Its programmable footpri...
YOOBIC is an AI-powered frontline employee experience and retail operations platform that unifies task management, internal communications, and mobile microl...
Yoodli is a Seattle-based AI communication coaching company, founded in 2021 by former Google engineers and spun out of the Allen Institute for AI incubator....
Yoom (formerly Tetavi) is an Israeli deep-tech company founded in 2016 that develops volumetric video and markerless performance-capture technology using pro...
Yoona.ai is an enterprise agentic-AI platform for product innovation, originally built for the fashion industry. It creates an adaptive "Enterprise Twin" of ...
YOOX NET-A-PORTER (YNAP) is a leading digital multi-brand luxury fashion group operating the online stores NET-A-PORTER, MR PORTER, YOOX, and THE OUTNET. Fol...
Yoplait China is a company surfaced as a portfolio company of idg-capital and added to the API Evangelist network as a stub for enrichment. Sector: consumer....
Yorkshire Building Society (YBS) is a UK mutual building society founded in 1864 and headquartered in Bradford, West Yorkshire. As a member-owned mutual rath...
Yoshi Mobility is a mobile vehicle-care and fleet-services platform founded in 2015 (Y Combinator S16). It brings automotive services to the vehicle wherever...
Yotpo is an eCommerce retention marketing platform offering Reviews & Ratings, Loyalty & Referrals, Subscriptions, and visual UGC. Each product exposes a doc...
YOU-app was a mobile wellbeing application built by Fifth Corner (Helsinki, Finland) that delivered daily "micro-actions" across food, mindfulness, movement,...
You.com runs an AI search and chat product alongside a developer platform that exposes web search APIs designed for AI systems, agents, and LLMs. The platfor...
YouArt is an all-in-one AI creative studio out of Y Combinator (founded 2025, San Francisco), positioned as "Patreon for AI Originals." It lets creators brow...
Youi is an Australian general insurance carrier headquartered at Sippy Downs on the Queensland Sunshine Coast, authorised by APRA and operating under AFSL 31...
youki is an open source container runtime written in Rust that implements the OCI runtime specification as a memory-safe alternative to runc, with rootless c...
Your Super (Your Superfoods, Inc.) is a direct-to-consumer plant-based superfoods brand founded in 2015 in Venice, California by Michael Kuech and Kristel de...
Counterpart (yourcounterpart.com) is an insurtech managing general agent offering management and professional liability insurance for small businesses, posit...
YOURIKA (YOURIKA Labs) is a Kitchener-Waterloo, Canada AI platform and venture studio that creates and scales purpose-built, verticalized AI ventures in part...
YourMembership is an association management system (AMS) and membership management platform for professional associations, nonprofits, clubs, and member-base...
YourPay is an Indonesian fintech mobile application that helps overseas workers and their families send money to Indonesia, pay bills (electricity, BPJS), bu...
YouScan is an AI-powered social media listening and consumer-intelligence platform that monitors mentions, conversations, and images across social networks, ...
European e-signature platform compliant with eIDAS with a REST API for creating signature requests, managing signers, sending documents, and tracking signing...
YouStake is a peer-to-peer sports staking and sponsorship marketplace, founded in 2013, that lets fans invest in skilled poker and esports players in exchang...
YouTrip (You Technologies Group, you.co) is a Singapore-based fintech that operates a multi-currency mobile travel wallet paired with a prepaid Mastercard, l...
YouTube APIs provide programmatic access to YouTube data including videos, playlists, channels, user interactions, live streaming, analytics, captions, and e...
The YouTube Data API v3 lets you incorporate YouTube functionality into your own application. You can use the API to fetch search results, manage videos, pla...
YouWork Agent publishes Scopewise, a deterministic commercial API for Indian freelancers and agencies: a project-quote endpoint that prices a scope of work i...
YPlan (operated by Leanworks Limited) was a mobile-first event discovery and last-minute booking app founded in London in 2012 by Rytis Vitkauskas and Viktor...
ypxfood (YPX Cayman) is a Taiwanese quick-service restaurant company specializing in Taiwanese food and snacks, backed by Qiming Venture Partners, LionRock C...
YQN is a global digital logistics platform and NVOCC / digital freight forwarder founded in 2015 and headquartered in Shanghai, China. It lets shippers compa...
Yr is a weather service from the Norwegian Meteorological Institute (MET Norway) and the Norwegian Broadcasting Corporation (NRK), providing free, high-quali...
YRC Worldwide (rebranded as Yellow Corporation in 2021) was a holding company whose subsidiaries — YRC Freight, Holland, Reddaway, New Penn, and HNRY Logisti...
Yuanbao Inc. (元保) is a technology-driven online insurance distribution platform in China, founded in 2019 and listed on NASDAQ under the ticker YB. It distri...
Yuanfudao (猿辅导) is a Beijing-based online education technology company founded in 2012 and operated under Kanyun Holdings (看云控股集团). Its consumer products inc...
Yuanxinjituan (Beijing Yuanxin Technology Group Co., Ltd. / 圆心科技集团) is a Chinese healthcare-technology company founded in 2015 and headquartered in Beijing, ...
Yubi (formerly CredAvenue) is an Indian debt and credit technology company operating a full-stack digital marketplace that connects enterprises, lenders, and...
Yubi (formerly CredAvenue) is a Chennai-based Indian fintech that operates a unified technology platform for debt and credit markets, connecting borrowers, l...
Yubico is the security company behind the YubiKey hardware authentication device and the inventor of the Yubico One-Time Password (OTP). Its public developer...
Yuga Labs is a Web3 company and the creator of the Bored Ape Yacht Club (BAYC), Mutant Ape Yacht Club (MAYC), and the Otherside metaverse, along with related...
Yugabyte is the company behind YugabyteDB, an open source (Apache 2.0), PostgreSQL-compatible distributed SQL database built for cloud-native and mission-cri...
YugabyteDB is a distributed PostgreSQL-compatible SQL database for cloud-native and mission-critical applications. It is delivered as open-source YugabyteDB ...
Yuhu is a cloud-based rental lifecycle management platform for multifamily and single-family property managers, covering leasing, prospects and applications,...
Yukon Open Data is a territorial government open-data portal for Canada running CKAN. It exposes the CKAN catalog API, a standardized machine-readable interf...
YuLife is a London-founded (2016) technology-driven insurtech and employee benefits platform offering group life insurance, group health insurance, income pr...
Yum! Brands is one of the world's largest restaurant companies, with global brands including KFC, Pizza Hut, Taco Bell, and The Habit Burger Grill. The compa...
Yum China Holdings is the largest restaurant company in China by system sales, operating KFC, Pizza Hut, Taco Bell, Lavazza, Little Sheep, and Huang Ji Huang...
Yummly is a recipe and food discovery platform (yummly.com) offering semantic and visual recipe search, personalized recommendations, shopping lists, and gui...
Yunji (云集) is a leading membership-based social e-commerce platform in China, founded in Hangzhou in May 2015. Yunji curates a wide range of consumer product...
Yuno is a global payment orchestration platform that lets merchants connect to 1,000+ payment methods, PSPs, anti-fraud, and payout providers through a singl...
Yunqi (云器科技, English brands ClickZetta and Singdata) is a cloud-native AI Lakehouse company that unifies structured, semi-structured, and unstructured data o...
Yunyinggu Technology (云英谷科技), which rebranded as Viewtrix Technology, is a Shenzhen-based fabless semiconductor company founded in 2012 that designs AMOLED d...
Yurts (Yurts AI / Yurts Technologies, Inc.) is a San Rafael, California generative-AI company founded in 2022 that rebranded to Legion Intelligence, Inc. in ...
Yutori builds AI web agents delivered as an API. Its Navigator (n1.5) computer-use model drives cloud browsers to navigate, click, type, and extract structur...
Yuze Semiconductor — legally Yunnan Yuze New Energy Co., Ltd. (云南宇泽新能源股份有限公司), trading internationally as Unigrace New Energy — is a Chinese photovoltaic mat...
Yuzu Health is a technology platform for building and operating custom, self-funded health plans end to end - plan design, member enrollment and eligibility,...