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- Vantel AI Platform for Commercial Insurance Brokerages
- G LNK Simplifying Collaboration for Healthcare Organizations & Professionals
- Cenote AI agents for conversational commerce
- Karoo AI native consumer lending platform for underserved Americans
- Overstand Labs Navigate any set of data - no matter how large - in minutes.
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- Dragoneye Custom video detection models in less than 5 minutes
- Garage Marketplace for America's most essential assets
- Elodin Unified flight software and hardware for the mission of tomorrow
- CodeAnt AI Autonomous offensive and defensive cybersecurity platform
- Breez Labs Helping Companies Deploy Email Agents in High Trust Domains
2023
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Summer 2023
220 companies- Every Banking + Payroll/Benefits + Bookkeeping + Tax in one place
- Fortuna Health TurboTax for Medicaid
- Accend AI agents for commercial underwriting at banks and fintechs
- Ohmic Biosciences Genetically engineering plants for disease resistance.
- sizeless The spatial AI to plan, build and maintain the world's infrastructure
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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
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- SuperTokens Open source alternative to Auth0 / AWS Cognito / Firebase Auth
- CoreCare Helping healthcare providers reduce administrative costs using AI
- Atomic API that lets companies embed investment accounts into their services
- Farel Next-gen airline OS
- Rarebird Elevating mental health to be a part of your daily coffee ritual.
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Winter 2020
229 companies
2019
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Summer 2019
174 companies -
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Winter 2019
194 companies- Nebullam (DBA Clayton Farms) We put farms inside restaurants, so customers get healthier food and…
- Keeper AI tax filing for complex returns
- AmpUp We make EV charging as simple and reliable as LED lights
- Cuanto Building the operating system for developing world merchants
- Alpaca API-first stock and crypto brokerage platform
2018
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Summer 2018
131 companies- Duffel The complete toolkit to sell travel.
- LemonBox AI-generated personalized nutrition solutions, built for you daily.
- OpenWrench We help retailers and restaurant chains manage repairs and…
- SPATE Trends prediction for marketers
- CB Therapeutics Fermentation-derived natural products to solve health problems
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Winter 2018
146 companies- Acely Every student's AI coach for college readiness
- Draftbit Build mobile apps visually. Source-code included.
- OpenSea This isn't just a marketplace; we're shaping the future of digital…
- Precious AI to curate your baby photos
- Promise Better payment systems for governments and the communities they serve.
2017
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Summer 2017
125 companies- Officely Office management software for hybrid workspaces
- VergeSense AI-Powered Building Management
- Helium Health Africa's #1 healthcare technology provider.
- Entocycle Automated factory to produce insect protein for farm animals.
- FollowUpThen FollowUpThen is an email-based personal assistant that sends you…
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Winter 2017
116 companies
2016
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Summer 2016
102 companies -
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Fellowship 2
18 companies- Zube Project management for Github issues
- Pramp A free peer-to-peer technical mock interviewing platform for engineers
- Squire OpenTable for barbershops
- 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- SOUNDBOKS We're creating the loudest battery-driven speaker on the market
- Deepgram Building foundational AI for speech transcription and understanding.
- Petcube Petcube is on the mission to improve lives of pets and pet owners…
- Mux Video infrastructure for developers
- Netomi Self-Driving Customer Care
2015
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Fellowship 1
19 companies- NullSpace VR A haptic feedback suit for VR
- finbox.io Easy to use fundamental investing tools
- 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.
- DNAsimple Donate and find DNA samples online
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Summer 2015
104 companies- Thrive Agritech We design and manufacture energy efficient LED lighting fixtures for…
- Instawork A flexible work app that connects businesses with hourly workers.
- Branch8 Branch8 helps sellers to list and manage products on e-commerce…
- SnapMagic AI-assisted electronics design
- 80,000 Hours An online guide that tells talented graduates how to maximise the…
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Winter 2015
110 companies- Tab Revolutionising the way travellers discover, plan and book a trip
- BuildScience The operating system for commercial buildings.
- Resolve Software to accelerate construction by finding issues in 3D BIM
- NimbleRx On-demand prescription delivery.
- GiveMeTap We produce & sell stainless steel water bottles that enables people…
2014
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Summer 2014
78 companies -
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Winter 2014
74 companies
2013
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Summer 2013
52 companies- Panorama Education Improving education for every student.
- Asseta Sourcing marketplace for semiconductor fab spare parts.
- Webflow Professional website design and publishing platform.
- Estimote, Inc. Location intelligence platform
- Lob Lob is the only automation platform that transforms direct mail into…
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Winter 2013
46 companies- Strikingly The easiest way to create a beautiful, mobile optimized website.
- InfluxData The platform for building and operating time series applications.
- Experiment crowdfunding platform for science
- Etleap Etleap is an ETL solution for creating perfect data pipelines.
- SimplyInsured We sell health insurance to small businesses 100% online.
2012
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Summer 2012
83 companies- ClassDojo Communication app for K-8 teachers, kids, and families
- SmartAsset Marketplace connecting consumers to financial advisors
- Upwave Marketing analytics for the world's biggest brand marketers
- NewsBlur NewsBlur is a personalized news reader
- Flightfox A platform to plan, book and manage global and group travel.
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Winter 2012
66 companies- 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.
- HireArt Gives businesses everything needed to hire & manage W2 contractors.
- CircuitHub On-Demand Electronics Manufacturing
- CleverDeck Collaborate with an artist to commission original artwork you'll live…
2011
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Summer 2011
60 companies -
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Winter 2011
45 companies- You Got Listings All-in-one apartment Marketing Platform for brokerages and landlords.
- Tremendous How businesses send money to people at scale. Fast, free, global.
- Zerocater Zerocater is revolutionizing how companies feed their employees
- Storyworth Record your family stories and print them in beautiful keepsake books.
- Instapainting Custom-made artwork from artists e-commerce marketplace.
2010
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Summer 2010
36 companies -
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Winter 2010
27 companies- Fabricly Fabricly is an online marketplace that takes the risk out of sourcing apparel manufacturers and materials. It is used by a growing numbe...
- 500Friends the best loyalty and retention marketing partner for CMOs.
- Embedly Embedly provides a platform and suite of tools to make embedding and previewing links simple. Embedly helps publishers and consumers mana...
- Bitplay Effortless Video Meetings - Acquired by Jive Software in 2013
- 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…
- Heyzap Heyzap (acquired by Fyber for $45m in 2016) is one of the largest…
- Airbnb Book accommodations around the world.
- 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...
- reMail Email search for iPhone. Acquired by Google in Feb 2010.
2008
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Summer 2008
22 companies- Poll Everywhere Interactive meetings and presentations
- CO2Stats Social and environmental web analytics. Acquired in December 2016.
- BackType BackType was an analytics company acquired by Twitter in 2011
- Posterous Dead simple blogs by email
- Anyvite Anyvite is a free site dedicated to event invitation creation and group organization. Launched in 2008, Anyvite provides users with the m...
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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- Splashup Splashup, formerly known as fauxto, is an online image editing service that provides some advanced tools and is unique for its incorporat...
- 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...
- Appjet Y Combinator funded AppJet is an online programming tool for building simple web apps. Founded by former MIT students, AppJet intends to ...
- SocialPicks SocialPicks is an investment community where members learn from each other.
- Dropbox Backup and share files in the cloud.
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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…
- Weebly Build a free website that grows with your business.
- Tsumobi Messaging.
- 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.
- 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- Wufoo Online form builder.
- Inkling Inkling, based in Chicago, Illinois, offers collective intelligence solutions to help organizations make more informed decisions. Inkling...
- 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.
- Flagr Flagr enables users to share places, adding photos, video and descriptions from their mobile phone. They can then create maps and embed t...
2005
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Summer 2005
8 companies- TextPayMe Founded in 2005, TextPayMe is an SMS payment service that lets you send money to other people using cell phone text messaging. TextPayMe ...
- 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 ...
- Clickfacts ClickFacts is a Malware Software Solutions company for buyers and sellers of online media. Its automated plug and play malware discovery ...
- Simmery No description available
