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
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- Knowtex Making doctors 2x more efficient with AI note-taking & charge capture
- Wand Solar We enable landlords to generate income from solar panels.
- Mistle Open source background agents
- Medplum API first electronic health record (EHR) that is open source
- TrueBiz Instant Background Checks for Businesses
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Winter 2022
398 companies- Nullstone An easier way to deploy and manage cloud apps
- Lovage Automatically fill empty appointment slots for beauty professionals
- IMT Care Disrupting Indian Insurance space by empowering distrubutors
- Torpedo Therapeutics High-precision, closed-loop neuromodulation devices
- Compra Rápida One-click checkout and AI sales assistant for LatAm.
2021
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Summer 2021
391 companies -
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Winter 2021
335 companies- Gradia Health Integrated, high touch healthcare — at scale
- Feroot Security AI-powered Compliance Platform for PCI 4, CCPA, HIPAA, CIPA, 50+ laws
- RocketSDR AI Native Sales Outreach Platform
- Humance AI that keeps complex construction projects on schedule.
- authzed Authorization Infrastructure securing AI at OpenAI, Zoom, & more
2020
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Summer 2020
209 companies -
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Winter 2020
229 companies- Operator.io Operator.io is OpenClaw that just works
- SOMATIC Bathroom cleaning robots for office buildings.
- Handoff AI estimator & agent for remodelers.
- Ditto Manage the words across your team’s product from design to production.
- Handl Handl converts documents (invoices, income stabs, custom forms, etc.)…
2019
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Summer 2019
174 companies -
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Winter 2019
194 companies- Mudrex India's largest crypto investing paltform
- Eclipse Foods Eclipse Foods is building the future of dairy using micelles, the…
- AmpUp We make EV charging as simple and reliable as LED lights
- Ashby All-in-one recruiting platform that empowers hiring excellence in…
- NALA Building Payments for the Next Billion.
2018
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Summer 2018
131 companies- Activeloop Database for AI
- Kunduz Kunduz provides instant answers to students' questions and makes…
- Papa One-stop-shop for flexible family care
- Rebellyous Foods Rebellyous Foods is a food manufacturing technology and production…
- Clear Gene Our tests help eradicate cancer by telling doctors whether they got…
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Winter 2018
146 companies
2017
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Summer 2017
125 companies- Officely Office management software for hybrid workspaces
- Flock Safety The first public safety operating system that eliminates crime.
- Roofr Sales software for roofers. Aerial measurements + proposals in seconds
- Aecore Vertically integrated commercial construction
- Entocycle Automated factory to produce insect protein for farm animals.
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Winter 2017
116 companies
2016
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Summer 2016
102 companies- Raptor Maps Raptor Maps builds software to manage the solar PV lifecycle.
- Multiply Labs Robotic production capacity for the pharma manufacturing industry
- New Incentives Cash transfers that save lives.
- Expo Expo brings together the best of web and native app development
- Airfordable Buy flights for only a fraction upfront and pay off the rest in…
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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.
- Squire OpenTable for barbershops
- Pramp A free peer-to-peer technical mock interviewing platform for engineers
- Zube Project management for Github issues
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Winter 2016
122 companies- Superside AI-First Creative Partner for Enterprise Teams
- Focal Systems Building the Operating System for B&M Retail using Deep Learning
- SOUNDBOKS We're creating the loudest battery-driven speaker on the market
- 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...
- Deako We make beautiful connected light switches that allow you to control…
2015
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Fellowship 1
19 companies- Canvas Medical Canvas is a predictive charting interface designed and built exclusively for primary care
- Staffjoy Better work schedules in less time
- Clearbanc Financial services for self-employed, freelancers, independent contractors, and entrepreneurs
- Apify Formerly Apifier. The web scraping and automation platform, which enables to turn any website into an API.
- finbox.io Easy to use fundamental investing tools
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Summer 2015
104 companies -
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Winter 2015
110 companies
2014
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Summer 2014
78 companies- Helion Energy Building the world's first fusion power plant
- Alchemy Nanotechnology-enabled coatings for automotive and defence sectors
- Hyperpad Create, Share, Play Mobile Games on the iPad.
- Clear Fintech SaaS platform for invoices, taxes, wealth management & credit.
- MTailor Get measured by your phone in under 30 seconds for perfect fitting…
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Winter 2014
74 companies- Guesty The management platform for the short term rental industry.
- OpenCurriculum Helping K-12 teachers and school administrators build awesome…
- CareMessage Patient engagement for low-income populations
- Shoobs We help you find and book tickets to great entertainment events that…
- TrueVault We make Privacy Software for SMBs.
2013
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Summer 2013
52 companies- Asseta Sourcing marketplace for semiconductor fab spare parts.
- Webflow Professional website design and publishing platform.
- Panorama Education Improving education for every student.
- Lob Lob is the only automation platform that transforms direct mail into…
- Estimote, Inc. Location intelligence platform
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Winter 2013
46 companies
2012
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Summer 2012
83 companies -
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Winter 2012
66 companies- Medigram We are making a HIPAA-compliant, Groupme app for doctors to…
- 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.
- CleverDeck Collaborate with an artist to commission original artwork you'll live…
- 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- 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.
- Tumult Tumult is building the next generation of apps for web design. Our…
- Storyworth Record your family stories and print them in beautiful keepsake books.
2010
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Summer 2010
36 companies- Recurse Center The retreat where curious programmers recharge and grow
- DemandSphere SEO & Content Marketing Intelligence
- 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- Infoharmoni Inforharmoni is a data visualization company that visualizes real-time social web and aggregates content.
- Zencoder Video Encoding API, Open source video player (video.js)
- OwnLocal OwnLocal automates marketing for over 129,000 SMBs through 3,300…
- 500Friends the best loyalty and retention marketing partner for CMOs.
- Bitplay Effortless Video Meetings - Acquired by Jive Software in 2013
2009
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Summer 2009
26 companies- Listia Mobile marketplace for trading used goods.
- Lingt Lingt provided a web-based platform for learning languages leveraging…
- Directed Edge Product recommendations.
- Olark Olark gives you an AI agent that works your marketing funnel 24/7
- Mixpanel Mixpanel is event analytics for builders that need answers.
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Winter 2009
16 companies- Volantio Post-booking revenue and capacity optimization for airlines…
- Picurio Picurio is web-based photo sharing and photo management software.
- Cloudkick Cloudkick is system to manage cloud servers, such as the Rackspace Cloud and Amazon's EC2. Cloudkick provides an easy to use monitoring/...
- Foodoro Foodoro is a marketplace where people can buy specialty food directly from artisanal Foodmakers Our goal is to help people discover amaz...
- 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- Ninite Simple third-party app patching and deployment for Windows.
- RescueTime Take Back Control of your Time
- Machine Zone Pioneers of mobile social gaming.
- 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...
2007
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Summer 2007
19 companies- Blue Frog Gaming Browser game studio behind Starfleet Commander. Its successor SFC2 is a free, persistent space strategy MMO.
- 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...
- Splashup Splashup, formerly known as fauxto, is an online image editing service that provides some advanced tools and is unique for its incorporat...
- Clickpass Clickpass provides single-sign-on services to enter into various websites by using a single password. Clickpass is headquartered in San ...
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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...
- Octopart Octopart is a search engine for electronic components
- 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 ...
- Thinkature No description available
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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...
- 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.
- Inkling Inkling, based in Chicago, Illinois, offers collective intelligence solutions to help organizations make more informed decisions. Inkling...
- Wufoo Online form builder.
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 ...
- 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 ...
- Infogami What is Infogami? The art of transforming data into meaningful information. Infogami Business Intelligence (BI) solutions turn raw data...
