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- Finbar Financial intelligence for every investor
- SalesPatriot Supply chain superintelligence for distribution and procurement
- Mecha Health Foundation models to automate x-ray analysis for radiologists
- Vantel AI Platform for Commercial Insurance Brokerages
- CopyCat AI AI for Commercial Insurance Agencies
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- Shiboleth Shiboleth automates lending compliance for financial institutions…
- Alex Alex is the AI recruiter for hiring great people.
- Copper Health Modern patient engagement and remote therapeutic monitoring platform
- Healia Modern health insurance for dual income families
- Maia AI relationship app that keeps couples together
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- CompUp Building a compensation graph to help companies optimise people spend
- Overwatch Enterprise software for enterprise risk and cyber fraud intelligence
- Devyce The global mobile network for business.
- Morf Health Workflow automation for healthcare providers
- Express Building Financing Southeast Asia's ~$1 trillion housing backlog
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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- Nirva The lifestyle medicine layer for clinicians.
- Axle Health Scheduling and workforce management SaaS for home healthcare providers
- Compose.ai Cut your writing time by 40% with AI-powered autocomplete
- Lygg Building New Anti-Aging Ingredients for Skincare
- Resquared Marketing automation platform for selling to local businesses.
2020
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Summer 2020
209 companies -
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Winter 2020
229 companies- PostHog The single platform to analyze, test, observe, and deploy new features
- Yassir Yassir is the leading Super App for French Speaking Africa
- Haven Homeownership reimagined for the 21st century.
- Pahamify College entrance test preparation App for students in Indonesia
- Junction API for at-home health data
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- iLabService AIoT monitoring, workflow, and evidence systems for regulated labs.
- Vimcal The world's fastest calendar, beautifully designed for remote teams.
- Duffel The complete toolkit to sell travel.
- LemonBox AI-generated personalized nutrition solutions, built for you daily.
- Leena AI We at Leena AI build a virtual assistant that answers employee's…
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Winter 2018
146 companies
2017
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Summer 2017
125 companies- Leon & George Buying and owning indoor potted plants made easy.
- Roofr Sales software for roofers. Aerial measurements + proposals in seconds
- Goodcover Digital Co-op Renters Insurance = half the price, better coverage.
- Aecore Vertically integrated commercial construction
- Rabbet The financial foundation for every real estate development decision
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Winter 2017
116 companies
2016
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Summer 2016
102 companies- RocketLit RocketLit is an adaptive learning and assessment platform.
- Airfordable Buy flights for only a fraction upfront and pay off the rest in…
- Instrumentl Instrumentl automates grant discovery and management for nonprofits.
- SmartPath Financial wellness for the middle class
- Yoshi Mobility Making car ownership and management frictionless.
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Fellowship 2
18 companies- Ctzen 311 for the developing world
- 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
- Pramp A free peer-to-peer technical mock interviewing platform for engineers
- Squire OpenTable for barbershops
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Winter 2016
122 companies- Stealth Worker Information Security (Cyber Security), Compliance and Privacy (GDPR &…
- Superside AI-First Creative Partner for Enterprise Teams
- Pave Pave analyzes Google Analytics + marketing data and sends you reports…
- Luciq (formerly Instabug) Agentic Observability Platform for Mobile
- Relativity Space Building humanity’s multiplanetary future.
2015
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Fellowship 1
19 companies -
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Summer 2015
104 companies -
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Winter 2015
110 companies- Meadow Point of Sale and Compliance SaaS for Cannabis Dispensaries
- Mezmo Observability platform to control all of your log data
- BuildScience The operating system for commercial buildings.
- Zenflow Medical device that provides a more effective, less invasive…
- Razorpay India's only full-stack financial solutions company for businesses.
2014
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Summer 2014
78 companies- ShipBob Providing Amazon level logistics to e-commerce businesses.
- MTailor Get measured by your phone in under 30 seconds for perfect fitting…
- Checkr People infrastructure for the future of work
- MetricWire Mobile surveys for researchers
- Clear Fintech SaaS platform for invoices, taxes, wealth management & credit.
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Winter 2014
74 companies
2013
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Summer 2013
52 companies- Estimote, Inc. Location intelligence platform
- Lob Lob is the only automation platform that transforms direct mail into…
- Webflow Professional website design and publishing platform.
- Asseta Sourcing marketplace for semiconductor fab spare parts.
- Panorama Education Improving education for every student.
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Winter 2013
46 companies- Fivetran The leader in automated data movement
- Strikingly The easiest way to create a beautiful, mobile optimized website.
- Padlet Papyrus → Parchment → Paper → Padlet
- Watsi Watsi is the first global crowdfunding platform for medical…
- SimplyInsured We sell health insurance to small businesses 100% online.
2012
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Summer 2012
83 companies -
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Winter 2012
66 companies- CircuitHub On-Demand Electronics Manufacturing
- Per Vices Building Mission Critical Software Defined Radio products.
- HireArt Gives businesses everything needed to hire & manage W2 contractors.
- Medigram We are making a HIPAA-compliant, Groupme app for doctors to…
- 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- Storyworth Record your family stories and print them in beautiful keepsake books.
- Tumult Tumult is building the next generation of apps for web design. Our…
- SingleStore The cloud-native, operational database built for speed and scale.
- Zerocater Zerocater is revolutionizing how companies feed their employees
- Instapainting Custom-made artwork from artists e-commerce marketplace.
2010
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Summer 2010
36 companies- inDinero Financial dashboard for businesses.
- 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- Bitplay Effortless Video Meetings - Acquired by Jive Software in 2013
- Mertado Mertado Mertado is an online social shopping platform that allows consumers to discover and buy products from communities they frequently...
- Fabricly Fabricly is an online marketplace that takes the risk out of sourcing apparel manufacturers and materials. It is used by a growing numbe...
- Infoharmoni Inforharmoni is a data visualization company that visualizes real-time social web and aggregates content.
- 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…
- 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.
- Heyzap Heyzap (acquired by Fyber for $45m in 2016) is one of the largest…
- Cloudkick Cloudkick is system to manage cloud servers, such as the Rackspace Cloud and Amazon's EC2. Cloudkick provides an easy to use monitoring/...
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...
- Joberator Joberator was formed to tackle head-on the growing challenges and connection-gap issues in the STEM employment and recruitment marketplac...
- Heroku Enabling developers to build and run applications in the cloud.
2007
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Summer 2007
19 companies- Clickpass Clickpass provides single-sign-on services to enter into various websites by using a single password. Clickpass is headquartered in San ...
- Blue Frog Gaming Browser game studio behind Starfleet Commander. Its successor SFC2 is a free, persistent space strategy MMO.
- Dropbox Backup and share files in the cloud.
- Disqus Add comments to your website.
- 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...
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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.
- Octopart Octopart is a search engine for electronic components
- Auctomatic Auctomatic, a Y Combinator company, offers an auction and marketplace management system for all of those individual sellers on such sites...
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.
- Zanbazaar Community-curated catalogs for product recommendations
- Jumpchat A platform bridging mobile text messages, email, and IM communication without needing to download anything. Users can send mass messages ...
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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...
- 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.
- 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 ...
- 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 ...
- Reddit The frontpage of the internet.
- Kiko We're the best online calendar solution to ever exist. Period.
