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- Confluence Labs AI models that learn from experience
- Robby AI agents that grow revenue for home services businesses
- shortkit Media infra for consumer apps
- RunAnywhere Fastest inference anywhere: open models on-prem, hosted or on-device
- Constellation Space AI operating system for mega-scale satellite networks.
2025
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Fall 2025
145 companies -
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Summer 2025
166 companies -
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Spring 2025
144 companies -
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Winter 2025
165 companies
2024
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Fall 2024
94 companies -
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Summer 2024
248 companies -
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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 -
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Winter 2022
398 companies- GrowthBook Open source feature flagging and A/B testing
- Bemlo AI-native scheduling and workforce management platform for healthcare
- AirMyne Building systems to remove carbon dioxide from air at industrial scale
- beU delivery Food delivery service in Africa
- Zorba AI copilot for real-estate sales teams, powered by proprietary data
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- Blissway The tolling industry’s prime tech infrastructure
- Balance The first digital payment experience company, built for B2B.
- Daybreak Health The first digital mental health system for youth
- Notabene The Notabene platform is the trust layer for global money movement.
- Thndr Investment platform for MENA individuals
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Winter 2020
229 companies
2019
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Summer 2019
174 companies- Vouch Insurance and risk management tools for startups and growth-stage…
- Mindset Health Building AI therapeutics for physical health conditions like IBS.
- Wren Wren is a monthly subscription to offset your carbon footprint.
- Deepnote A better data science notebook.
- Binks A zero inventory, zero returns factory-to-consumer apparel company
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Winter 2019
194 companies- Handle Simplifying Payments and Compliance for Construction Suppliers
- Spring in Africa Investing in innovation
- Volta Labs, Inc. Unlocking the utility of genomics for the world.
- Our World in Data Research and data to make progress against the world’s largest…
- AccioJob Offline-first tech skilling and placement for India
2018
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Summer 2018
131 companies- The Good Food Institute Building a world where alternative proteins are no longer alternative.
- Corvus Robotics Autonomous drones to help warehouses scan inventory.
- Duffel The complete toolkit to sell travel.
- 64x Bio Enabling next generation medicines. A comprehensive platform and…
- Within Company Brain for people and agents to work in harmony.
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Winter 2018
146 companies- OpenSea This isn't just a marketplace; we're shaping the future of digital…
- ArchForm Replacing orthodontic braces with our clear aligner and software
- Pelago The world's first digital clinic for substance use management
- Glowing.io Unified, enterprise messaging platform for leading brands of the world
- Veriff Veriff is a global AI-native identity platform building trust online
2017
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Summer 2017
125 companies- Goodcover Digital Co-op Renters Insurance = half the price, better coverage.
- Flowspace The operating system powering ecommerce fulfillment
- Rev Genomics Rev is a biotechnology company creating better plants.
- Flock Safety The first public safety operating system that eliminates crime.
- Helium Health Africa's #1 healthcare technology provider.
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Winter 2017
116 companies- Nuvola Nuvola is transforming battery manufacturing, making EV batteries…
- Apozy Apozy makes every website safe to browse
- Rippling One place to run all your HR, IT, and Finance. Globally.
- Lively, Inc. Modern employee benefits & health savings account (HSA) provider
- Voiceops We help B2C companies learn from every customer interaction
2016
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Summer 2016
102 companies -
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Fellowship 2
18 companies- 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.
- Zube Project management for Github issues
- Ctzen 311 for the developing world
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Winter 2016
122 companies- Thunkable Thunkable is the no-code platform to build powerful native mobile apps
- DevColor We give Black software engineers support they need to advance in tech.
- Castle Block bots & bad behavior
- Copia Copia's a for-profit technology company that solves food waste &…
- Superside AI-First Creative Partner for Enterprise Teams
2015
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Fellowship 1
19 companies- DNAsimple Donate and find DNA samples online
- NullSpace VR A haptic feedback suit for VR
- Clearbanc Financial services for self-employed, freelancers, independent contractors, and entrepreneurs
- Canvas Medical Canvas is a predictive charting interface designed and built exclusively for primary care
- Apify Formerly Apifier. The web scraping and automation platform, which enables to turn any website into an API.
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Summer 2015
104 companies- Xendit Provides payment infrastructure for Southeast Asia
- Thrive Agritech We design and manufacture energy efficient LED lighting fixtures for…
- Branch8 Branch8 helps sellers to list and manage products on e-commerce…
- Heroic Labs Social Infrastructure for Games; Makers of Nakama game server, Satori…
- Shape (ShapeScale) ShapeScale is a personal 3D scanner and fitness tracker that…
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Winter 2015
110 companies
2014
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Summer 2014
78 companies- MTailor Get measured by your phone in under 30 seconds for perfect fitting…
- SFOX Crypto-currency trading platform.
- Bayes Impact Tech nonprofit building the future of public services.
- Clear Fintech SaaS platform for invoices, taxes, wealth management & credit.
- PicnicAI Intelligence to accelerate human health.
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Winter 2014
74 companies- GBatteries Enabling li-ion batteries to charge ultra fast without compromising…
- Ambition Coaching and gamification software for sales teams.
- PiinPoint PiinPoint helps businesses find the best locations for growth
- Cambly On-demand access to English tutors over video chat.
- AirHelp AirHelp helps air passengers get compensation for delayed, cancelled…
2013
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Summer 2013
52 companies- Panorama Education Improving education for every student.
- Lob Lob is the only automation platform that transforms direct mail into…
- Asseta Sourcing marketplace for semiconductor fab spare parts.
- Webflow Professional website design and publishing platform.
- Estimote, Inc. Location intelligence platform
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Winter 2013
46 companies- SimplyInsured We sell health insurance to small businesses 100% online.
- InfluxData The platform for building and operating time series applications.
- Padlet Papyrus → Parchment → Paper → Padlet
- CircuitLab Online circuit simulator and electronic schematic editor.
- Watsi Watsi is the first global crowdfunding platform for medical…
2012
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Summer 2012
83 companies- ClassDojo Communication app for K-8 teachers, kids, and families
- Rainforest no-code end-to-end testing that integrates with any CI/CD pipeline
- SmartAsset Marketplace connecting consumers to financial advisors
- Zapier The easiest way to automate your work.
- Submittable The best way to launch, manage and measure social impact programs
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Winter 2012
66 companies- Rescale High Performance Computing Built for the Cloud
- Medigram We are making a HIPAA-compliant, Groupme app for doctors to…
- Per Vices Building Mission Critical Software Defined Radio products.
- CircuitHub On-Demand Electronics Manufacturing
- Shoptiques Shoptiques.com lets you shop the world's best local boutiques online.
2011
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Summer 2011
60 companies- AgileMD Predictive analytics and clinical pathways for hospitals
- MixRank Data products for sales, marketing, finance, recruiting, and more.
- OneSignal Engage customers through personalized omni-channel messaging
- HackerRank Change the world to value skills over pedigree
- LeadGenius LeadGenius is an account-based marketing and lead generation…
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Winter 2011
45 companies- Instapainting Custom-made artwork from artists e-commerce marketplace.
- Zerocater Zerocater is revolutionizing how companies feed their employees
- SingleStore The cloud-native, operational database built for speed and scale.
- Storyworth Record your family stories and print them in beautiful keepsake books.
- Tremendous How businesses send money to people at scale. Fast, free, global.
2010
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Summer 2010
36 companies -
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Winter 2010
27 companies- Infoharmoni Inforharmoni is a data visualization company that visualizes real-time social web and aggregates content.
- OwnLocal OwnLocal automates marketing for over 129,000 SMBs through 3,300…
- Bitplay Effortless Video Meetings - Acquired by Jive Software in 2013
- Crocodoc Embed PDFs, PowerPoints, and other documents into web and mobile apps
- Zencoder Video Encoding API, Open source video player (video.js)
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…
- Recurious thesixtyone is Digg for new music, a social filter for the tsunami of indie creativity hitting the web. Like Digg, the homepage is commun...
- Echodio Sync and stream your music across any device. Acquired in 2009.
- Airbnb Book accommodations around the world.
- 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
- Anyvite Anyvite is a free site dedicated to event invitation creation and group organization. Launched in 2008, Anyvite provides users with the m...
- BackType BackType was an analytics company acquired by Twitter in 2011
- Cloudant NoSQL Database-aaS. Acquired by IBM in 2014. Now IBM Cloud Data…
- Slinkset Votable lists
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Winter 2008
21 companies- Ninite Simple third-party app patching and deployment for Windows.
- RescueTime Take Back Control of your Time
- 280 North 280 North is a web application company based on their proprietary application framework, Cappuccino. Along with Objective-J, Cappuccino p...
- Omnisio Edit and enhance online video. Acquired by Google in July 2008.
- FathomDB FathomDB offers databases as a service, taking care of many of the day-to-day tasks database administrators have to deal with and letting...
2007
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Summer 2007
19 companies- Disqus Add comments to your website.
- Dropbox Backup and share files in the cloud.
- SocialPicks SocialPicks is an investment community where members learn from each other.
- Clickpass Clickpass provides single-sign-on services to enter into various websites by using a single password. Clickpass is headquartered in San ...
- Bountii Bountii is a price search startup that has built a search engine capable of finding shoppers lower and more accurate prices than any exis...
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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…
- Octopart Octopart is a search engine for electronic components
- Tsumobi Messaging.
- Weebly Build a free website that grows with your business.
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.
- Thinkature No description available
- Likebetter An online personality test game, where you look at two photos and choose which one you “Like Better”.
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Winter 2006
7 companies- Flagr Flagr enables users to share places, adding photos, video and descriptions from their mobile phone. They can then create maps and embed t...
- Wufoo Online form builder.
- Snipshot We sold Snipshot to Ansa in 2013.
- Clustrix Clustrix provides the leading scale-out relational database engineered for the cloud or data center. ClustrixDB is a drop-in replacement ...
- Inkling Inkling, based in Chicago, Illinois, offers collective intelligence solutions to help organizations make more informed decisions. Inkling...
2005
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Summer 2005
8 companies- Reddit The frontpage of the internet.
- 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 ...
- Loopt Loopt, based in Silicon-Valley and backed by leading venture capital firms Sequoia Capital and New Enterprise Associates, has created an ...
- Simmery No description available
