YC List
50 classes 6,350 companies
List of Y Combinator companies by class
2026
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Summer 2026
231 companies- Financial Datasets Connect your agents to the stock market
- Prodigy Research Training the world's best AI model for quantitative finance.
- Archal API sandboxes, built for AI agents
- Bernard AI employees that run home appliance repair companies
- Hebbian Robotics Foundational infrastructure for Physical AI
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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
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
2021
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Summer 2021
391 companies -
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Winter 2021
335 companies- Juicy Marbles Juicy marbles makes thick juicy and marbled plant based steaks.
- Lion Pose Clinical skincare tested on diverse skin, now available in Sephora.
- Moonvalley Building the next generation AI creative studio
- LiveFlow The Unified AI-ERP & FP&A Platform
- Version Story Compare Git for Lawyers — now within Claude
2020
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Summer 2020
209 companies- Nephrogen Curative genetic medicines for kidney diseases
- CoreCare Helping healthcare providers reduce administrative costs using AI
- RingMD We work with governments to implement telemedicine programs.
- WareIQ Amazon-prime like logistics for eCommerce companies in India
- Atomic API that lets companies embed investment accounts into their services
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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
2018
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Summer 2018
131 companies- BrainHi Automated receptionist that answers missed calls for local businesses
- BlueCargo The automated solution for complex freight transactions.
- Apprentice Health We deploy sensors and software that increase hospital efficiency.
- Clear Gene Our tests help eradicate cancer by telling doctors whether they got…
- Kunduz Kunduz provides instant answers to students' questions and makes…
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Winter 2018
146 companies- Pelago The world's first digital clinic for substance use management
- Avro Life Science Skin patches for generic drug delivery.
- Quantstamp Security auditing for Web3
- Nectome Human whole body end-of-life preservation for later revival.
- Fondo Bookkeeping, tax, & tax credits on autopilot for 2,000+ startups
2017
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Summer 2017
125 companies- Rev Genomics Rev is a biotechnology company creating better plants.
- Flock Safety The first public safety operating system that eliminates crime.
- Flowspace The operating system powering ecommerce fulfillment
- Leon & George Buying and owning indoor potted plants made easy.
- Cashfree Payments Next-gen digital payments provider for India.
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Winter 2017
116 companies- BuyPower Modern bill payment platform for African businesses and consumers.
- Bountiful An Operating System for agriculture.
- Mednet Mednet helps doctors answer their toughest clinical questions —…
- Indee Labs Enabling T cell immunotherapy discovery, development and manufacturing
- NanoNets Automatic Data Extraction
2016
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Summer 2016
102 companies- Nova Credit Bridging a world of consumer-permissioned credit data
- Vote.org No description available
- Instrumentl Instrumentl automates grant discovery and management for nonprofits.
- Joy The platform for all your life events.
- ApolloShield ApolloShield is a system that detects unwanted drones and drives them…
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Fellowship 2
18 companies- Awesound Publish your audiobook in minutes, charge subscriptions for a paid podcast, and sell audio directly from your own website.
- Pramp A free peer-to-peer technical mock interviewing platform for engineers
- Zube Project management for Github issues
- Ctzen 311 for the developing world
- Squire OpenTable for barbershops
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Winter 2016
122 companies- Petcube Petcube is on the mission to improve lives of pets and pet owners…
- Lattice Modern people management platform.
- Sanitation and Health Rights in India (SHRI) Sanitation and Health Rights in India (SHRI) fights alongside communities to end open defecation as a key step in an ongoing struggle for...
- Luciq (formerly Instabug) Agentic Observability Platform for Mobile
- SOUNDBOKS We're creating the loudest battery-driven speaker on the market
2015
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Fellowship 1
19 companies -
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Summer 2015
104 companies- Reach Long range, wireless energy distribution that scales
- Go1 A learning platform that enables you to train your staff or customers.
- Gemnote Gemnote is the easiest way to design, create and send custom products.
- Branch8 Branch8 helps sellers to list and manage products on e-commerce…
- New Story We pioneer solutions to end the global housing crisis by empowering…
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Winter 2015
110 companies- NimbleRx On-demand prescription delivery.
- Razorpay India's only full-stack financial solutions company for businesses.
- BuildScience The operating system for commercial buildings.
- Zeitview Inspection software for renewable energy & sustainable infrastructure
- SIRUM SIRUM is a “match.com” for unused medicine. We connect institutional…
2014
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Summer 2014
78 companies -
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Winter 2014
74 companies- Cambly On-demand access to English tutors over video chat.
- Guesty The management platform for the short term rental industry.
- GBatteries Enabling li-ion batteries to charge ultra fast without compromising…
- MixerBox AI Super-Apps to Live Easier | The anything anytime superapps…
- Shoobs We help you find and book tickets to great entertainment events that…
2013
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Summer 2013
52 companies- Panorama Education Improving education for every student.
- Webflow Professional website design and publishing platform.
- Estimote, Inc. Location intelligence platform
- Asseta Sourcing marketplace for semiconductor fab spare parts.
- Lob Lob is the only automation platform that transforms direct mail into…
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Winter 2013
46 companies
2012
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Summer 2012
83 companies- Zentail We're making ecommerce simple connecting brands with sales channels
- Submittable The best way to launch, manage and measure social impact programs
- Plivo Voice AI Agents for customer engagement, including WhatsApp, SMS &…
- Rainforest no-code end-to-end testing that integrates with any CI/CD pipeline
- Flightfox A platform to plan, book and manage global and group travel.
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Winter 2012
66 companies- Medigram We are making a HIPAA-compliant, Groupme app for doctors to…
- HireArt Gives businesses everything needed to hire & manage W2 contractors.
- Per Vices Building Mission Critical Software Defined Radio products.
- CleverDeck Collaborate with an artist to commission original artwork you'll live…
- Shoptiques Shoptiques.com lets you shop the world's best local boutiques online.
2011
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Summer 2011
60 companies -
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Winter 2011
45 companies- Storyworth Record your family stories and print them in beautiful keepsake books.
- SingleStore The cloud-native, operational database built for speed and scale.
- You Got Listings All-in-one apartment Marketing Platform for brokerages and landlords.
- Instapainting Custom-made artwork from artists e-commerce marketplace.
- Tremendous How businesses send money to people at scale. Fast, free, global.
2010
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Summer 2010
36 companies- Recurse Center The retreat where curious programmers recharge and grow
- Docker Software development platform.
- WorkFlowy WorkFlowy is a better way to manage information. It provides a simple…
- inDinero Financial dashboard for businesses.
- AnyList One app for stress-free shopping, cooking, and meal planning.
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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...
- OwnLocal OwnLocal automates marketing for over 129,000 SMBs through 3,300…
- Optimizely The first all-in-one operating system for marketing
- Crocodoc Embed PDFs, PowerPoints, and other documents into web and mobile apps
- 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...
2009
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Summer 2009
26 companies- Lingt Lingt provided a web-based platform for learning languages leveraging…
- Listia Mobile marketplace for trading used goods.
- Stripe Economic infrastructure for the internet.
- Mixpanel Mixpanel is event analytics for builders that need answers.
- Olark Olark gives you an AI agent that works your marketing funnel 24/7
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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...
- Picurio Picurio is web-based photo sharing and photo management software.
- Wattvision Sensors and software for energy tracking. Like 'fitbit' for your…
- reMail Email search for iPhone. Acquired by Google in Feb 2010.
2008
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Summer 2008
22 companies -
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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.
- 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...
- Omnisio Edit and enhance online video. Acquired by Google in July 2008.
- 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.
- Disqus Add comments to your website.
- 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...
- Splashup Splashup, formerly known as fauxto, is an online image editing service that provides some advanced tools and is unique for its incorporat...
- 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...
- Weebly Build a free website that grows with your business.
- Auctomatic Auctomatic, a Y Combinator company, offers an auction and marketplace management system for all of those individual sellers on such sites...
- 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.
- Jumpchat A platform bridging mobile text messages, email, and IM communication without needing to download anything. Users can send mass messages ...
- Zanbazaar Community-curated catalogs for product recommendations
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Winter 2006
7 companies- Wufoo Online form builder.
- 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 ...
- Inkling Inkling, based in Chicago, Illinois, offers collective intelligence solutions to help organizations make more informed decisions. Inkling...
- Snipshot We sold Snipshot to Ansa in 2013.
2005
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Summer 2005
8 companies- 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 ...
- 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.
- Infogami What is Infogami? The art of transforming data into meaningful information. Infogami Business Intelligence (BI) solutions turn raw data...
