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 -
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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- Respan Open-source, extensible AI gateway with observability and evals
- Haplotype Labs Personalized prevention using genetics and AI
- Gumloop The multiplayer AI agent builder. Let anyone build, IT controls access
- Granza Bio Building programmable therapeutics for the immune system
- Tower M&A due diligence platform powered by AI
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- BiggerPicture The largest freight scheduling network in the industry.
- Two Dots AI fraud prevention and underwriting agent
- AnythingLLM The open-source AI platform enterprises run on their own hardware
- Plutto Supply-chain risk management and compliance platform for Latin…
- Airhart Aeronautics Airplanes anyone can fly
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Winter 2022
398 companies- Housewarming Share casual moments with the people you care about
- Bemlo AI-native scheduling and workforce management platform for healthcare
- goodfin Building the next generation of wealth
- Cozmo AI End-to-end AI agents for property claims, from loss report to estimate
- Shaped The real-time retrieval engine for search, feeds, and agents.
2021
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Summer 2021
391 companies- Jestor Saving OPS from SLOPS. Jestor builds internal systems that last.
- HeyCharge Low-cost, high-scale EV charging platform for apartments (and more).
- Plai Create, launch, and optimize Facebook ads and ads on 10+ platforms
- Stownest Flexible On-Demand Storage Space for Household, SMEs & Travellers.
- Beau Workflows for repetitive customer-facing tasks
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Winter 2021
335 companies- Coderhouse Live online courses that turn learners into builders
- FlutterFlow Application Development Platform (Native Mobile + Web Apps)
- Tint Makes it easy for tech platforms to embed insurance into products
- Compose.ai Cut your writing time by 40% with AI-powered autocomplete
- Arpio Recover from any outage in 10 minutes or less.
2020
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Summer 2020
209 companies- CarbonChain We help companies automate the accounting of their carbon emissions
- Decentro API Platform for Banking Integrations (Plaid for India and APAC)
- HENRY We train AI engineers and connect them with companies.
- Volopay Brex for South East Asia - Corporate cards & automated payments.
- Nephrogen Curative genetic medicines for kidney diseases
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Winter 2020
229 companies
2019
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Summer 2019
174 companies- Legacy Legacy helps you test, improve, and freeze your sperm
- UpEquity UpEquity gives homebuyers more certainty and power.
- Sequence Bio Discovering the true signals of disease to power life-changing drugs.
- Well Principled The neural engine for autonomous robots
- Gotrade Robinhood for Southeast Asia (SEA)
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Winter 2019
194 companies
2018
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Summer 2018
131 companies- Inscribe AI Document Fraud Detection for Banks, Credit Unions & Lenders
- Culdesac We build cities for people, not cars.
- Pine Park Health We provide primary care in senior living communities.
- LemonBox AI-generated personalized nutrition solutions, built for you daily.
- Mutiny Your AI agent for creating anything customer-facing, in minutes.
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Winter 2018
146 companies- Precious AI to curate your baby photos
- Substack A place for independent writing.
- OpenSea This isn't just a marketplace; we're shaping the future of digital…
- Snackpass Order ahead at restaurants and get rewards with friends.
- Lucy Goods, Inc Lucy’s mission is to reduce tobacco-related harm to zero. We provide…
2017
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Summer 2017
125 companies- Nimble Data-driven teacher hiring
- Flock Safety The first public safety operating system that eliminates crime.
- Carrot Fertility Customized fertility benefits for modern companies.
- Roofr Sales software for roofers. Aerial measurements + proposals in seconds
- Aecore Vertically integrated commercial construction
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Winter 2017
116 companies- Mednet Mednet helps doctors answer their toughest clinical questions —…
- Nuvola Nuvola is transforming battery manufacturing, making EV batteries…
- Aella Diversified credit infrastructure powering payments across Africa.
- Collectly We help healthcare orgs collect more money faster
- Dost Education Getting kids ready for school in India.
2016
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Summer 2016
102 companies- Validere A carbon MRV solution for energy and hard-to-abate sectors
- SmartPath Financial wellness for the middle class
- Scale AI Data-centric infrastructure to accelerate the development of AI
- Instrumentl Instrumentl automates grant discovery and management for nonprofits.
- Airfordable Buy flights for only a fraction upfront and pay off the rest in…
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Fellowship 2
18 companies- Zube Project management for Github issues
- 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
- Pramp A free peer-to-peer technical mock interviewing platform for engineers
- Squire OpenTable for barbershops
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Winter 2016
122 companies- Apollo.io Apollo is the foundation of your entire go-to-market strategy.
- Stealth Worker Information Security (Cyber Security), Compliance and Privacy (GDPR &…
- Deepgram Building foundational AI for speech transcription and understanding.
- Opentrons We make robots for biologists.
- HistoWiz Accelerating Histopathology for Cancer Research
2015
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Fellowship 1
19 companies- NullSpace VR A haptic feedback suit for VR
- Pawprint All your pet's data in one place
- Apify Formerly Apifier. The web scraping and automation platform, which enables to turn any website into an API.
- DNAsimple Donate and find DNA samples online
- Clearbanc Financial services for self-employed, freelancers, independent contractors, and entrepreneurs
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Summer 2015
104 companies- Thrive Agritech We design and manufacture energy efficient LED lighting fixtures for…
- Branch8 Branch8 helps sellers to list and manage products on e-commerce…
- Circle Medical Modern primary care via video and in-person
- Go1 A learning platform that enables you to train your staff or customers.
- Bodyport Predicting and preventing heart disease.
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Winter 2015
110 companies- Mashgin Self-Checkout using Computer Vision.
- Flip Community-driven marketplace for sneakers.
- Giveffect Fundraising, Volunteer and Donor Management SaaS for nonprofits.
- Resolve Software to accelerate construction by finding issues in 3D BIM
- SIRUM SIRUM is a “match.com” for unused medicine. We connect institutional…
2014
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Summer 2014
78 companies- MetricWire Mobile surveys for researchers
- Helion Energy Building the world's first fusion power plant
- Clear Fintech SaaS platform for invoices, taxes, wealth management & credit.
- Alchemy Nanotechnology-enabled coatings for automotive and defence sectors
- ShipBob Providing Amazon level logistics to e-commerce businesses.
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Winter 2014
74 companies
2013
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Summer 2013
52 companies- Lob Lob is the only automation platform that transforms direct mail into…
- Webflow Professional website design and publishing platform.
- Estimote, Inc. Location intelligence platform
- Panorama Education Improving education for every student.
- Asseta Sourcing marketplace for semiconductor fab spare parts.
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Winter 2013
46 companies- Goldbelly Empowering restaurants and small food makers to ship nationwide.
- CircuitLab Online circuit simulator and electronic schematic editor.
- Fivetran The leader in automated data movement
- Etleap Etleap is an ETL solution for creating perfect data pipelines.
- Padlet Papyrus → Parchment → Paper → Padlet
2012
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Summer 2012
83 companies -
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Winter 2012
66 companies- HireArt Gives businesses everything needed to hire & manage W2 contractors.
- Per Vices Building Mission Critical Software Defined Radio products.
- Screenleap One-click screen sharing with installation-free viewing on all devices
- Shoptiques Shoptiques.com lets you shop the world's best local boutiques online.
- Rescale High Performance Computing Built for the Cloud
2011
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Summer 2011
60 companies -
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Winter 2011
45 companies- Tremendous How businesses send money to people at scale. Fast, free, global.
- You Got Listings All-in-one apartment Marketing Platform for brokerages and landlords.
- Storyworth Record your family stories and print them in beautiful keepsake books.
- Instapainting Custom-made artwork from artists e-commerce marketplace.
- SingleStore The cloud-native, operational database built for speed and scale.
2010
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Summer 2010
36 companies- Docker Software development platform.
- Recurse Center The retreat where curious programmers recharge and grow
- WorkFlowy WorkFlowy is a better way to manage information. It provides a simple…
- AnyList One app for stress-free shopping, cooking, and meal planning.
- DemandSphere SEO & Content Marketing Intelligence
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Winter 2010
27 companies- Mertado Mertado Mertado is an online social shopping platform that allows consumers to discover and buy products from communities they frequently...
- 500Friends the best loyalty and retention marketing partner for CMOs.
- Zencoder Video Encoding API, Open source video player (video.js)
- Cardpool Cardpool is a gift card exchange marketplace where anybody can buy, sell, or trade their new or pre-owned gift cards. Customers can bu...
- Optimizely The first all-in-one operating system for marketing
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.
- Wattvision Sensors and software for energy tracking. Like 'fitbit' for your…
- Picurio Picurio is web-based photo sharing and photo management software.
- Airbnb Book accommodations around the world.
2008
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Summer 2008
22 companies -
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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
- Heroku Enabling developers to build and run applications in the cloud.
- MightyQuiz MightyQuiz powers a collection of user generated quiz questions that can be answered and rated on-site or through a distributable widget.
- 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...
2007
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Summer 2007
19 companies- Dropbox Backup and share files in the cloud.
- 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...
- Disqus Add comments to your website.
- SocialPicks SocialPicks is an investment community where members learn from each other.
- Blue Frog Gaming Browser game studio behind Starfleet Commander. Its successor SFC2 is a free, persistent space strategy MMO.
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Winter 2007
14 companies- Buxfer Buxfer helps you make better spending decisions by making it easy to…
- 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...
- Auctomatic Auctomatic, a Y Combinator company, offers an auction and marketplace management system for all of those individual sellers on such sites...
- Weebly Build a free website that grows with your business.
- Tsumobi Messaging.
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.
- Jamglue Jamglue is an online community allowing users to listen or mix music from a library of user-contributed music.
- Pollground Online polls.
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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...
- Snipshot We sold Snipshot to Ansa in 2013.
- Inkling Inkling, based in Chicago, Illinois, offers collective intelligence solutions to help organizations make more informed decisions. Inkling...
- Wufoo Online form builder.
- Clustrix Clustrix provides the leading scale-out relational database engineered for the cloud or data center. ClustrixDB is a drop-in replacement ...
2005
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Summer 2005
8 companies- Clickfacts ClickFacts is a Malware Software Solutions company for buyers and sellers of online media. Its automated plug and play malware discovery ...
- TextPayMe Founded in 2005, TextPayMe is an SMS payment service that lets you send money to other people using cell phone text messaging. TextPayMe ...
- Loopt Loopt, based in Silicon-Valley and backed by leading venture capital firms Sequoia Capital and New Enterprise Associates, has created an ...
- Reddit The frontpage of the internet.
- Infogami What is Infogami? The art of transforming data into meaningful information. Infogami Business Intelligence (BI) solutions turn raw data...
