YC List
50 classes 6,350 companies
List of Y Combinator companies by class
2026
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Summer 2026
231 companies -
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Spring 2026
193 companies -
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Winter 2026
197 companies
2025
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Fall 2025
145 companies- The Hog Real-time web intelligence API for AI agents and GTM teams
- Bravi AI operating system for home improvement manufacturers
- Kaigo Health AI outpatient care workforce
- Scoop Automating regulatory submissions for life sciences
- Mayflower AI plug-in that automates HR immigration screening and compliance
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Summer 2025
166 companies -
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Spring 2025
144 companies -
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Winter 2025
165 companies- Harbera AI Healthcare Provider Credentialing Software
- Mastra The Javascript framework for building AI agents, from the Gatsby devs
- Finbar Financial intelligence for every investor
- Verbiflow Outbound Sequencing Infrastructure for Startups
- Quantstruct AI documentation engineer – test & autoimprove stale product docs
2024
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Fall 2024
94 companies -
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Summer 2024
248 companies- RunLocal AI AI agent that optimizes inference for embedded compute like Jetson
- cmux Open source applied AI lab building next-gen devtools
- Sage Care Automating home care agency operations with AI
- Ångström AI Gen AI molecular simulations that reproduce wetlab results
- Kastle AI employee for consumer lending
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Winter 2024
248 companies
2023
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Summer 2023
220 companies -
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Winter 2023
274 companies
2022
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Summer 2022
233 companies- Clearline AI for modern automotive dealerships
- AviaryAI Outbound AI voice agents for the financial services industry
- SigmaMind AI Voice AI platform purpose-built for contact centers.
- Emerge Career All-in-one re-entry & workforce development training platform
- Wondercraft Create video by chatting to AI
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Winter 2022
398 companies- Siftly Get your brand discovered and recommended by ChatGPT
- Housewarming Share casual moments with the people you care about
- Stock Unlock Web-app | investment education and analysis tools for retail investors
- Strac Data Discovery, DLP, DSPM for SaaS, Cloud, Gen AI & Endpoints
- Convoy Webhooks Gateway for outgoing and incoming webhooks.
2021
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Summer 2021
391 companies -
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Winter 2021
335 companies
2020
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Summer 2020
209 companies -
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Winter 2020
229 companies
2019
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Summer 2019
174 companies- Dover Your startup's all-in-one recruiting solution
- Mindset Health Building AI therapeutics for physical health conditions like IBS.
- Well Principled The neural engine for autonomous robots
- PayMongo Modern online payments for the Philippines
- UpEquity UpEquity gives homebuyers more certainty and power.
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Winter 2019
194 companies- Sapling.ai Language models for enterprise applications.
- Alpaca API-first stock and crypto brokerage platform
- Superb AI Superb AI provides end-to-end computer vision MLOps platform
- Cosmic Cosmic is an AI-powered headless CMS
- Nebullam (DBA Clayton Farms) We put farms inside restaurants, so customers get healthier food and…
2018
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Summer 2018
131 companies- Pine Park Health We provide primary care in senior living communities.
- Easol Shopify for experiences
- Modern Treasury Payment operations tools for money movement.
- Clear Gene Our tests help eradicate cancer by telling doctors whether they got…
- Alpha Vantage Developer-friendly and enterprise-grade APIs for financial market…
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Winter 2018
146 companies
2017
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Summer 2017
125 companies- Goodcover Digital Co-op Renters Insurance = half the price, better coverage.
- Long Term Stock Exchange LTSE is an ecosystem for visionary business.
- Nimble Data-driven teacher hiring
- SafeButler Your chief servant for shopping insurance
- May Mobility Transforming cities and rural areas through AV transit and technology
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Winter 2017
116 companies- Bitrise Hosted Continuous Integration and Delivery for mobile apps
- The Essential E-commerce 2.0
- Token Transit Complete fare payment platform for public transportation
- Rippling One place to run all your HR, IT, and Finance. Globally.
- Mednet Mednet helps doctors answer their toughest clinical questions —…
2016
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Summer 2016
102 companies- Multiply Labs Robotic production capacity for the pharma manufacturing industry
- ApolloShield ApolloShield is a system that detects unwanted drones and drives them…
- Bird The world’s largest omnichannel communications platform
- Validere A carbon MRV solution for energy and hard-to-abate sectors
- Scale AI Data-centric infrastructure to accelerate the development of AI
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Fellowship 2
18 companies- Zube Project management for Github issues
- Squire OpenTable for barbershops
- Pramp A free peer-to-peer technical mock interviewing platform for engineers
- Awesound Publish your audiobook in minutes, charge subscriptions for a paid podcast, and sell audio directly from your own website.
- Ctzen 311 for the developing world
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Winter 2016
122 companies- Deako We make beautiful connected light switches that allow you to control…
- Perlara Perlara: building the YC for rare disease parents
- Petcube Petcube is on the mission to improve lives of pets and pet owners…
- Gecko Robotics AI + Robotics for the Built World
- Stealth Worker Information Security (Cyber Security), Compliance and Privacy (GDPR &…
2015
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Fellowship 1
19 companies -
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Summer 2015
104 companies- PickTrace Workforce Management for Large Farms
- Human Interest The 401(k) for small and medium-sized businesses.
- Tesorio Tesorio is the cash flow performance platform that helps finance…
- Thrive Agritech We design and manufacture energy efficient LED lighting fixtures for…
- Bodyport Predicting and preventing heart disease.
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Winter 2015
110 companies
2014
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Summer 2014
78 companies -
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Winter 2014
74 companies- PiinPoint PiinPoint helps businesses find the best locations for growth
- MixerBox AI Super-Apps to Live Easier | The anything anytime superapps…
- Shoobs We help you find and book tickets to great entertainment events that…
- Guesty The management platform for the short term rental industry.
- Povio Engineering and Design that Fuels Startup Success
2013
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Summer 2013
52 companies- Asseta Sourcing marketplace for semiconductor fab spare parts.
- Estimote, Inc. Location intelligence platform
- Panorama Education Improving education for every student.
- Webflow Professional website design and publishing platform.
- Lob Lob is the only automation platform that transforms direct mail into…
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Winter 2013
46 companies- Padlet Papyrus → Parchment → Paper → Padlet
- Strikingly The easiest way to create a beautiful, mobile optimized website.
- Watsi Watsi is the first global crowdfunding platform for medical…
- InfluxData The platform for building and operating time series applications.
- Lollipuff Online Auctions for Authentic (Women's) Designer Goods
2012
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Summer 2012
83 companies- Flightfox A platform to plan, book and manage global and group travel.
- ClassDojo Communication app for K-8 teachers, kids, and families
- Zentail We're making ecommerce simple connecting brands with sales channels
- Upwave Marketing analytics for the world's biggest brand marketers
- Zapier The easiest way to automate your work.
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Winter 2012
66 companies- HireArt Gives businesses everything needed to hire & manage W2 contractors.
- Shoptiques Shoptiques.com lets you shop the world's best local boutiques online.
- Medigram We are making a HIPAA-compliant, Groupme app for doctors to…
- CleverDeck Collaborate with an artist to commission original artwork you'll live…
- CircuitHub On-Demand Electronics Manufacturing
2011
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Summer 2011
60 companies- Apollo Apollo helps engineering teams accelerate delivery
- Quartzy Marketplace for life science supplies.
- Streak Streak transforms Gmail into a powerful CRM
- OneSignal Engage customers through personalized omni-channel messaging
- Videopixie Marketplace for Video Production Services. We help you hire the best…
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Winter 2011
45 companies- Zerocater Zerocater is revolutionizing how companies feed their employees
- SingleStore The cloud-native, operational database built for speed and scale.
- Instapainting Custom-made artwork from artists e-commerce marketplace.
- You Got Listings All-in-one apartment Marketing Platform for brokerages and landlords.
- Tumult Tumult is building the next generation of apps for web design. Our…
2010
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Summer 2010
36 companies -
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Winter 2010
27 companies- Zencoder Video Encoding API, Open source video player (video.js)
- Crocodoc Embed PDFs, PowerPoints, and other documents into web and mobile apps
- Optimizely The first all-in-one operating system for marketing
- Zenedy Zenedy Zenedy was started as a means to showcase information about obscure topics from around the web.
- Fabricly Fabricly is an online marketplace that takes the risk out of sourcing apparel manufacturers and materials. It is used by a growing numbe...
2009
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Summer 2009
26 companies -
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Winter 2009
16 companies- Volantio Post-booking revenue and capacity optimization for airlines…
- reMail Email search for iPhone. Acquired by Google in Feb 2010.
- Echodio Sync and stream your music across any device. Acquired in 2009.
- Picurio Picurio is web-based photo sharing and photo management software.
- Foodoro Foodoro is a marketplace where people can buy specialty food directly from artisanal Foodmakers Our goal is to help people discover amaz...
2008
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Summer 2008
22 companies- Poll Everywhere Interactive meetings and presentations
- Slinkset Votable lists
- CO2Stats Social and environmental web analytics. Acquired in December 2016.
- Anyvite Anyvite is a free site dedicated to event invitation creation and group organization. Launched in 2008, Anyvite provides users with the m...
- Posterous Dead simple blogs by email
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Winter 2008
21 companies- RescueTime Take Back Control of your Time
- Ninite Simple third-party app patching and deployment for Windows.
- 280 North 280 North is a web application company based on their proprietary application framework, Cappuccino. Along with Objective-J, Cappuccino p...
- YumDots YumDots wants to be the go-to mobile application for finding places to eat when out on the town. Its emphasis on using interactive maps t...
- Joberator Joberator was formed to tackle head-on the growing challenges and connection-gap issues in the STEM employment and recruitment marketplac...
2007
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Summer 2007
19 companies- Songkick Songkick is the great live music startup. Since 2007, we’ve set about making it as easy, fun and fair as possible for you to see your fav...
- Clickpass Clickpass provides single-sign-on services to enter into various websites by using a single password. Clickpass is headquartered in San ...
- Splashup Splashup, formerly known as fauxto, is an online image editing service that provides some advanced tools and is unique for its incorporat...
- Disqus Add comments to your website.
- SocialPicks SocialPicks is an investment community where members learn from each other.
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Winter 2007
14 companies- Virtualmin Virtualmin is taking on the lack of innovation in the server admin programs, like Plesk, by making a more accessable version for pages ma...
- Buxfer Buxfer helps you make better spending decisions by making it easy to…
- Tsumobi Messaging.
- Weebly Build a free website that grows with your business.
- Octopart Octopart is a search engine for electronic components
2006
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Summer 2006
10 companies- Scribd World's largest online library.
- Xobni Xobni makes your inbox and address book smarter. Xobni, and its Smartr product suite, discover all the people you've ever emailed, calle...
- OMGPop An independent flash game studio.
- Shoutfit We tried to build a social network around clothing. Also briefly built a search engine for clothing.
- Pollground Online polls.
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Winter 2006
7 companies- Inkling Inkling, based in Chicago, Illinois, offers collective intelligence solutions to help organizations make more informed decisions. Inkling...
- Flagr Flagr enables users to share places, adding photos, video and descriptions from their mobile phone. They can then create maps and embed t...
- Clustrix Clustrix provides the leading scale-out relational database engineered for the cloud or data center. ClustrixDB is a drop-in replacement ...
- Snipshot We sold Snipshot to Ansa in 2013.
- Wufoo Online form builder.
2005
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Summer 2005
8 companies- Reddit The frontpage of the internet.
- Loopt Loopt, based in Silicon-Valley and backed by leading venture capital firms Sequoia Capital and New Enterprise Associates, has created an ...
- TextPayMe Founded in 2005, TextPayMe is an SMS payment service that lets you send money to other people using cell phone text messaging. TextPayMe ...
- Clickfacts ClickFacts is a Malware Software Solutions company for buyers and sellers of online media. Its automated plug and play malware discovery ...
- Kiko We're the best online calendar solution to ever exist. Period.
