YC List
48 classes 6,313 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- Amera Automating claims processing workflows for health insurance payers.
- Fernstone AI-native insurance brokerage.
- Piggy Robotics Humanoid robots that do your chores for the price of an iPhone!
- Absurd The production canvas for AI film teams
- Hypercubic Agentic AI for Mainframe Operations and Modernization
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Summer 2025
166 companies- Datafruit The AI workspace for software implementations
- Stormy Stormy runs the office so your crew can run the work.
- Tesora Frontier AI for Actuaries
- Manufact Cloud infrastructure for MCP servers and Claude / ChatGPT plugins.
- SigmanticAI The Cursor for Chip Design - Delivering Silicon-Ready Chip Designs…
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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- Housewarming Share casual moments with the people you care about
- Glep AI-Native Spend platform built for Real Estate businesses
- Shaped The real-time retrieval engine for search, feeds, and agents.
- Enlightra Multicolor lasers for ultrafast data transmission
- Convoy Webhooks Gateway for outgoing and incoming webhooks.
2021
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Summer 2021
391 companies -
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Winter 2021
335 companies- GimBooks GimBooks makes Bookkeeping Easy for small business owners
- Topkey Topkey is the all-in-one financial operating platform that simplifies expense management for hospitality managers.
- Tint Makes it easy for tech platforms to embed insurance into products
- Camber Admin automation for healthcare
- Supadock Multi-agent AI for physical logistics operations
2020
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Summer 2020
209 companies- Mito Cursor for data analysis
- Jeeves International banking infrastructure for global startups.
- SuperTokens Open source alternative to Auth0 / AWS Cognito / Firebase Auth
- Akiflow All your tasks and calendars into an AI-powered productivity app
- Datafold Automating manual and repetitive data engineering tasks with AI
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Winter 2020
229 companies- Karat Financial Business banking that helps you grow
- Pahamify College entrance test preparation App for students in Indonesia
- Isabl Cancer tests based on whole genome and transcriptome data.
- TagMango Monetisation tool for the Indian creator economy
- Ramani We're building financial infrastructure for Africa's supply chains
2019
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Summer 2019
174 companies- Freshpaint Customer data collection, safeguarding, & activation for healthcare
- GitStart Pull Requests as a Service
- Prolific Making diverse, high-quality data easily available to anyone, anywhere
- Short Story Modern ecommerce for petite women
- Dex Dex is a personal CRM that reminds you to keep in touch with the…
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Winter 2019
194 companies- Switchboard Technology for Trucking
- Pools (fka Withfriends) Pools is a memberships platform for event organizers
- Exly One stop shop for creators to launch, manage & grow their knowledge…
- Nabis Nabis is the largest licensed cannabis wholesale platform.
- Flockjay AI-driven learning, content, and coaching for sales teams
2018
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Summer 2018
131 companies- Cowrywise Digitizing wealth management in Africa
- Duffel The complete toolkit to sell travel.
- SPATE Trends prediction for marketers
- BrainHi Automated receptionist that answers missed calls for local businesses
- The Good Food Institute Building a world where alternative proteins are no longer alternative.
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Winter 2018
146 companies- AesculaTech Responsive materials, better lives.
- Acely Every student's AI coach for college readiness
- Shogun Shogun empowers brands to create exceptional ecommerce experience.
- Simetrik No code enterprise SaaS for financial control automation.
- Nectome Human whole body end-of-life preservation for later revival.
2017
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Summer 2017
125 companies- Pyka Autonomous electric airplanes
- Rev Genomics Rev is a biotechnology company creating better plants.
- Entocycle Automated factory to produce insect protein for farm animals.
- SafeButler Your chief servant for shopping insurance
- Rabbet The financial foundation for every real estate development decision
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Winter 2017
116 companies- Indee Labs Enabling T cell immunotherapy discovery, development and manufacturing
- Upcall Upcall provides outbound call professionals as a service.
- AON3D Additive Manufacturing with advanced materials
- OneFin Shopify for Financial Services
- Lively, Inc. Modern employee benefits & health savings account (HSA) provider
2016
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Summer 2016
102 companies- New Incentives Cash transfers that save lives.
- RocketLit RocketLit is an adaptive learning and assessment platform.
- Athelas Extensible, Integrated Technology that Simplifies Health Systems
- ApolloShield ApolloShield is a system that detects unwanted drones and drives them…
- Bird The world’s largest omnichannel communications platform
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Winter 2016
122 companies- Apollo.io Apollo is the foundation of your entire go-to-market strategy.
- NetBeez Network monitoring from the end-user perspective
- Function of Beauty Customizable beauty for hair, skin, and body care products.
- Focal Systems Building the Operating System for B&M Retail using Deep Learning
- Opentrons We make robots for biologists.
2015
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Summer 2015
104 companies- Cofactor Genomics Cofactor closes the precision medicine gap with predictive diagnostics
- Branch8 Branch8 helps sellers to list and manage products on e-commerce…
- Reach Long range, wireless energy distribution that scales
- Circle Medical Modern primary care via video and in-person
- Go1 A learning platform that enables you to train your staff or customers.
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Winter 2015
110 companies- Giveffect Fundraising, Volunteer and Donor Management SaaS for nonprofits.
- Mashgin Self-Checkout using Computer Vision.
- Razorpay India's only full-stack financial solutions company for businesses.
- Sails Co. Full-service web, mobile, & cloud studio providing professional…
- 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- Ambition Coaching and gamification software for sales teams.
- OpenCurriculum Helping K-12 teachers and school administrators build awesome…
- Snapdocs digital mortgage closing
- Dyspatch AI Email Production - Emails on brand, guaranteed to work, fast.
- 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.
- Asseta Sourcing marketplace for semiconductor fab spare parts.
- 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- InfluxData The platform for building and operating time series applications.
- Watsi Watsi is the first global crowdfunding platform for medical…
- Experiment crowdfunding platform for science
- Goldbelly Empowering restaurants and small food makers to ship nationwide.
- CircuitLab Online circuit simulator and electronic schematic editor.
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.
- Rescale High Performance Computing Built for the Cloud
- Screenleap One-click screen sharing with installation-free viewing on all devices
- CircuitHub On-Demand Electronics Manufacturing
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.
- Zerocater Zerocater is revolutionizing how companies feed their employees
- Tumult Tumult is building the next generation of apps for web design. Our…
- Instapainting Custom-made artwork from artists e-commerce marketplace.
- You Got Listings All-in-one apartment Marketing Platform for brokerages and landlords.
2010
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Summer 2010
36 companies -
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Winter 2010
27 companies- Zencoder Video Encoding API, Open source video player (video.js)
- Zenedy Zenedy Zenedy was started as a means to showcase information about obscure topics from around the web.
- Mertado Mertado Mertado is an online social shopping platform that allows consumers to discover and buy products from communities they frequently...
- Crocodoc Embed PDFs, PowerPoints, and other documents into web and mobile apps
- Bitplay Effortless Video Meetings - Acquired by Jive Software in 2013
2009
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Summer 2009
26 companies- Lingt Lingt provided a web-based platform for learning languages leveraging…
- Mixpanel Mixpanel is event analytics for builders that need answers.
- Directed Edge Product recommendations.
- Olark Olark gives you an AI agent that works your marketing funnel 24/7
- Listia Mobile marketplace for trading used goods.
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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.
- Cloudkick Cloudkick is system to manage cloud servers, such as the Rackspace Cloud and Amazon's EC2. Cloudkick provides an easy to use monitoring/...
- 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.
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.
- Anyvite Anyvite is a free site dedicated to event invitation creation and group organization. Launched in 2008, Anyvite provides users with the m...
- Picwing Photo Sharing platform for families
- BackType BackType was an analytics company acquired by Twitter in 2011
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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
- Omnisio Edit and enhance online video. Acquired by Google in July 2008.
- 280 North 280 North is a web application company based on their proprietary application framework, Cappuccino. Along with Objective-J, Cappuccino p...
- 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- Blue Frog Gaming Blue Frog Gaming
- 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 was a platform where stock investors could exchange…
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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…
- Tsumobi Messaging.
- 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
2006
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Summer 2006
10 companies- Scribd World's largest online library.
- OMGPop An independent flash game studio.
- Xobni Xobni makes your inbox and address book smarter. Xobni, and its Smartr product suite, discover all the people you've ever emailed, calle...
- Likebetter An online personality test game, where you look at two photos and choose which one you “Like Better”.
- Zanbazaar Community-curated catalogs for product recommendations
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Winter 2006
7 companies- 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 ...
- 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...
- Snipshot We sold Snipshot to Ansa in 2013.
2005
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Summer 2005
8 companies- 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 ...
- 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
