Companies - Y - API Evangelist Providers

Y Combinator

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...

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Y&S

Y&S is the company behind ReservaTurno, an Argentine consumer

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Y42

Y42 is a managed DataOps platform ("Gitful data ops") that runs production-ready

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Yaak

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...

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Yacob

Yacob was a Dubai-based Intelligent Nutrition platform and 500 Global

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Yahoo

The Fantasy Sports APIs provide URIs used to access fantasy sports data. Currently the APIs support retrieval of Fantasy Football, Baseball, Basketball, and ...

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Yahoo Finance

"Real time low latency Yahoo Finance API for stock market, crypto currencies, and currency exchange"

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Yale University

Yale University is a private Ivy League research university in New Haven, Connecticut, United States, ranked #17 in the QS World University Rankings 2025. It...

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Yalo

'Yalo is an intelligent sales platform that uses AI agents to help consumer

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Yammer

'Yammer is a company surfaced as a portfolio company of emergence-capital and added to the

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Yampa

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...

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Yana

Yana is an AI-powered emotional companion app (published by Yana App,

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Yandex Translate API

Yandex Translate is a machine translation REST API from Yandex that supports 100+ languages. It provides text translation between any supported language pair...

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Yandex.Maps Geocoder

"Use geocoding to get an object's coordinates from its address"

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Yandex.Weather

"Assesses weather condition in specific locations"

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YankeeTek

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

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Yanolja

'Yanolja is a company surfaced as a portfolio company of softbank-vision-fund and added to

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Yanyin Technology

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...

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Yao Hu Town

'Yao Hu Town is a company surfaced as a portfolio company of idg-capital and added to the

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Yaoshibang

'Yaoshibang is a company surfaced as a portfolio company of dcm-ventures and added to the

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Yapily

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...

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YapStone

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

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Yapta

Yapta is a company surfaced as a portfolio company of version-one-ventures and added to the

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Yard Club

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

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Yardbook

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

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Yardi

Yardi develops and supports industry-leading investment and property

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Yardi Propware

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...

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Yardlink

Yardlink is a company surfaced as a portfolio company of speedinvest and added to the API

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Yards Brewing

Yards Brewing Company is an independent craft brewery founded in 1995 and headquartered in Philadelphia, Pennsylvania. Yards operates a brewery and taproom a...

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YARN

YARN (Yet Another Resource Negotiator in the original Hadoop context; also the JavaScript package manager) refers here to the yarnpkg.com JavaScript package ...

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Yarn

Yarn is an open-source JavaScript package manager and project manager originally created at Facebook

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YAS

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

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Yaskawa / Motoman

Yaskawa Electric Corporation is a Kitakyushu, Japan industrial automation company and the world's largest manufacturer of AC servo motors and motion controll...

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Yasmina Holdings Limited

Yasmina Holdings Limited is a company surfaced as a portfolio company of 500-global and added

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Yaspa

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

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Yassir

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...

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Yatra

'Yatra is a company surfaced as a portfolio company of norwest-venture-partners and added

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Yavin

Yavin is a company surfaced as a portfolio company of seedcamp and added to the API Evangelist

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Yaya Pass, Inc.

Yaya Pass, Inc. is a company surfaced as a portfolio company of 500-global and added to the

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Yaydoo

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

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YayPay

YayPay is a company surfaced as a portfolio company of 500-global, techstars and added to

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Yaysay

Yaysay is a company surfaced as a portfolio company of lightspeed-venture-partners and added

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Yazaki

Yazaki Corporation is a Japanese global Tier 1 automotive supplier headquartered in Tokyo. Yazaki is a leading manufacturer of automotive wiring harnesses, c...

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YCVC W14

YCVC W14 is a company surfaced as a portfolio company of a16z and added to the API Evangelist

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Yealthy

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

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Yearn Finance

Yearn Finance is a DeFi yield aggregator that automates yield farming

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YearOne

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

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Yeeld

Move faster with payment experts offering advisory and development services, along with a Surcharging API to recover costs and ensure compliance.

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Yellow

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

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Yellow Ai

Yellow Ai is a company surfaced as a portfolio company of lightspeed-venture-partners and

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Yellow Card

'Yellow Card is a company surfaced as a portfolio company of polychain and added to the API

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Yellow.ai

'Yellow.ai is a company surfaced as a portfolio company of sapphire-ventures and added to

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Yellowbrick Data

'Yellowbrick Data is a company surfaced as a portfolio company of gv, ivp, menlo-ventures,

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YellowPad

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

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Yelp

Yelp connects people with great local businesses. The Yelp Fusion API

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Yes No

"Generate yes or no randomly"

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Yesbank

'Yesbank is a company surfaced as a portfolio company of norwest-venture-partners and added

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YesGraph

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...

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YeshID

'YeshID is an AI-native workforce identity and access control platform that

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yesmro

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 ...

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YesPath

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...

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Yesware

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...

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Yetcargo

Yetcargo is a Mexican freight and cargo transportation company that connects

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Yext

Yext is a digital presence platform that enables businesses to manage their listings across 200+ publishers, update location data, manage reviews, and power ...

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YGOPRODeck

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...

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Yield Guild Games

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...

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Yield Protocol

Yield Protocol was a decentralized Ethereum protocol that brought fixed-rate, fixed-term borrowing and lending to DeFi via collateralized debt vaults and its...

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Yield.xyz

'Yield.xyz (formerly StakeKit) is a non-custodial, on-chain yield infrastructure

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Yieldify *

'Yieldify is a website personalization and conversion rate optimization (CRO) platform

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Yieldmo

Yieldmo is a programmatic native advertising marketplace and smart exchange that differentiates and enhances the value of ad inventory for buyers and sellers...

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yinglisolar

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...

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Yipitdata

'YipitData is a market-intelligence and alternative-data company that delivers

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ylhyoil

ylhyoil is an upstream oilfield services provider backed by Qiming Venture Partners, serving

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Ylookup

Ylookup is a London-based fintech (founded 2025, EQT Ventures-backed) building an agentic workflow engine for fund administration, corporate services, tax, a...

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YNAB

"Budgeting & Planning"

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Yo Fio

YoFio is a Mexican fintech founded in 2019 that provides working-capital

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Yo Momma Jokes

"REST API for Yo Momma Jokes"

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yoaa

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

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Yoast

Yoast is the maker of the world's most popular WordPress SEO plugin, active on over 13 million sites. Yoast provides developer APIs for integrating SEO metad...

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Yoco

Yoco is a South African fintech providing card acceptance and payments

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Yodeck

Yodeck is a cloud-based digital signage platform for managing screens

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Yoderm

YoDerm was a consumer telehealth company operating an online dermatology platform that let patients upload photos and a medical questionnaire, receive a pers...

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Yodle

'Yodle was a New York-based local online marketing and lead-generation company for small

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Yodlee

Yodlee (Envestnet | Yodlee) is a financial data aggregation platform

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Yogaia

Yogaia is a Finnish online fitness company, founded in 2013 and headquartered

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Yokohama City Open Data

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...

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Yokoy

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...

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YoloRekt

'YOLOrekt is a social, hyper-gamified DeFi prediction-markets dApp where users

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Yonder

'Yonder is a UK-based financial technology company offering rewards credit and debit cards

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Yonsei University

Yonsei University is a private research university in Seoul, South Korea, founded in 1885 and ranked #73 in the QS World University Rankings 2025. Its public...

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Yoobic

YOOBIC is an AI-powered frontline employee experience and retail operations platform that unifies task management, internal communications, and mobile microl...

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Yoom (fka Tetavi)

'Yoom (formerly Tetavi) is an Israeli deep-tech company founded in 2016

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Yoona.ai

Yoona.ai is an enterprise agentic-AI platform for product innovation, originally built for the fashion industry. It creates an adaptive "Enterprise Twin" of ...

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YOOX NET-A-PORTER (YNAP)

YOOX NET-A-PORTER (YNAP) is a leading digital multi-brand luxury fashion group operating

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Yoplait China

'Yoplait China is a company surfaced as a portfolio company of idg-capital and added to the

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Yorkshire Building Society

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...

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Yoshi

'Yoshi Mobility is a mobile vehicle-care and fleet-services platform founded

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Yotpo

Yotpo is an eCommerce retention marketing platform offering Reviews &

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YOU-app

YOU-app was a mobile wellbeing application built by Fifth Corner (Helsinki, Finland) that delivered

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You.com

You.com runs an AI search and chat product alongside a developer platform

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Youart

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...

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Youi

Youi is an Australian general insurance carrier headquartered at Sippy Downs on the

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Youki

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...

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Your Super

Your Super (Your Superfoods, Inc.) is a direct-to-consumer plant-based

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Yourcounterpart

Counterpart (yourcounterpart.com) is an insurtech managing general agent offering management and professional liability insurance for small businesses, posit...

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YOURIKA

YOURIKA (YOURIKA Labs) is a Kitchener-Waterloo, Canada AI platform and venture studio that creates and scales purpose-built, verticalized AI ventures in part...

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YourMembership

YourMembership is an association management system (AMS) and membership management platform for professional associations, nonprofits, clubs, and member-base...

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YourPay

YourPay is an Indonesian fintech mobile application that helps overseas workers and their

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YouScan

YouScan is an AI-powered social media listening and consumer-intelligence platform that monitors mentions, conversations, and images across social networks, ...

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YouSign

European e-signature platform compliant with eIDAS with a REST API for creating signature requests, managing signers, sending documents, and tracking signing...

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YouStake

YouStake is a peer-to-peer sports staking and sponsorship marketplace, founded in 2013,

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Youtrip

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...

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Youtube

YouTube APIs provide programmatic access to YouTube data including videos,

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YouTube Data

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...

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yplanapp

YPlan (operated by Leanworks Limited) was a mobile-first event discovery and last-minute

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ypxfood

ypxfood (YPX Cayman) is a Taiwanese quick-service restaurant company specializing in

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YQN

'YQN is a global digital logistics platform and NVOCC / digital freight forwarder founded

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Yr

Yr is a weather service from the Norwegian Meteorological Institute (MET Norway) and the Norwegian Broadcasting Corporation (NRK), providing free, high-quali...

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YRC Worldwide

YRC Worldwide (rebranded as Yellow Corporation in 2021) was a holding company whose subsidiaries — YRC Freight, Holland, Reddaway, New Penn, and HNRY Logisti...

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Yuanbao (元保)

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...

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yuanxinjituan

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, ...

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Yubi

Yubi (formerly CredAvenue) is an Indian debt and credit technology company operating a full-stack digital marketplace that connects enterprises, lenders, and...

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Yubi (fka CredAvenue)

Yubi (formerly CredAvenue) is a Chennai-based Indian fintech that operates a unified technology platform for debt and credit markets, connecting borrowers, l...

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Yubico

Yubico is the security company behind the YubiKey hardware authentication device and the inventor of the Yubico One-Time Password (OTP). Its public developer...

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Yuga Labs

'Yuga Labs is a Web3 company and the creator of the Bored Ape Yacht Club (BAYC),

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Yugabyte

Yugabyte is the company behind YugabyteDB, an open source (Apache 2.0), PostgreSQL-compatible distributed SQL database built for cloud-native and mission-cri...

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YugabyteDB

YugabyteDB is a distributed PostgreSQL-compatible SQL database for cloud-native and mission-critical applications. It is delivered as open-source YugabyteDB ...

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Yuhu

Yuhu is a cloud-based rental lifecycle management platform for multifamily and single-family property managers, covering leasing, prospects and applications,...

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Yukon Open Data

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...

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Yulife

YuLife is a London-founded (2016) technology-driven insurtech and employee benefits platform offering group life insurance, group health insurance, income pr...

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Yum Brands

Yum! Brands is one of the world's largest restaurant companies, with

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Yum China

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...

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Yummly

Yummly is a recipe and food discovery platform (yummly.com) offering

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Yunji

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...

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Yuno

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...

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Yunqi (ClickZetta / Singdata Lakehouse)

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...

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Yunyinggu (Viewtrix Technology)

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...

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Yutori

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...

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Yuzu Health

Yuzu Health is a technology platform for building and operating custom, self-funded health plans end to end - plan design, member enrollment and eligibility,...

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Discovery

Learnings

Guidance

Toolbox

Alignment

API Evangelist LLC

Companies - Y

Y Combinator

Y&S

Y42

Yaak

Yacob

Yahoo

Yahoo Finance

Yale University

Yalo

Yammer

Yampa

Yana

Yandex Translate API

Yandex.Maps Geocoder

Yandex.Weather

YankeeTek

Yanolja

Yanyin Technology

Yao Hu Town

Yaoshibang

Yapily

YapStone

Yapta

Yard Club

Yardbook

Yardi

Yardi Propware

Yardlink

Yards Brewing

YARN

Yarn

YAS

Yaskawa / Motoman

Yasmina Holdings Limited

Yaspa

Yassir

Yatra

Yavin

Yaya Pass, Inc.

Yaydoo

YayPay

Yaysay

Yazaki

YCVC W14

Yealthy

Yearn Finance

YearOne

Yeeld

Yellow

Yellow Ai

Yellow Card

Yellow.ai

Yellowbrick Data

YellowPad

Yelp

Yes No

Yesbank

YesGraph

YeshID

yesmro

YesPath

Yesware

Yetcargo

Yext

YGOPRODeck

Yield Guild Games

Yield Protocol

Yield.xyz

Yieldify *

Yieldmo

yinglisolar

Yipitdata

ylhyoil