Y Combinator's directory lists 45 companies in the Winter 2011 batch: 12 Active, 16 Acquired, 0 Public and 17 Inactive. 38% of Winter 2011 is listed Inactive, against 23% across YC batches at least two years old, so this batch has lost more companies than most.
ActiveAcquiredPublicInactive
Statuses are Y Combinator's own listing in its public company directory, read on the date shown. YC's directory can drop companies altogether, so the Inactive counts here are a floor, not a full count of companies that stopped. Acquired and Public are as YC lists them; neither says anything about the price or the outcome for founders.
Every company in Winter 2011
| Company | What they do | Status | Team |
|---|---|---|---|
| Acunote | Active | — | |
| Close | CRM and sales automation tools for startups and SMBs | Active | 120 |
| GOAT Group | Platform for the greatest products from the past, present and future. | Active | 1600 |
| Instapainting | Custom-made artwork from artists e-commerce marketplace. | Active | 2 |
| Mino Games | Mobile games company | Active | 11 |
| SingleStore | The cloud-native, operational database built for speed and scale. | Active | 150 |
| Storyworth | Record your family stories and print them in beautiful keepsake books. | Active | 13 |
| Talkable | Online store referrals. | Active | 76 |
| Tremendous | How businesses send money to people at scale. Fast, free, global. | Active | 150 |
| Tumult | Tumult is building the next generation of apps for web design. Our… | Active | 1 |
| You Got Listings | All-in-one apartment Marketing Platform for brokerages and landlords. | Active | 3 |
| Zerocater | Zerocater is revolutionizing how companies feed their employees | Active | 140 |
| Apportable | iOS porting | Acquired | 51 |
| Comprehend | SaaS to increase speed and quality of clinical trials. | Acquired | 51 |
| Custora | Custora is a predictive analytics platform for e-commerce marketing… | Acquired | 11 |
| DrChrono | The essential platform for modern medical practices and patients. | Acquired | 150 |
| Earbits | Google AdWords for music. Allowing bands and labels to bid for… | Acquired | 15 |
| Fivestars | Customer loyalty and payments platform for small businesses. | Acquired | 201 |
| HelloSign | eSignature software for small and mid-market businesses. | Acquired | 100 |
| Hotspots | Real-time analytics (acq by TWTR, 2012) | Acquired | 2 |
| Humble Bundle | Pay what you want for awesome games and other content while giving to… | Acquired | 100 |
| Lanyrd | IMDB of conferences. | Acquired | 2 |
| Mailgun | Email API service. | Acquired | 51 |
| OrderAhead | Order ahead for pickup | Acquired | 50 |
| Pebble | Watch that helps you get shit done and limit the mayhem of… | Acquired | 51 |
| Sendoid | High speed peer to peer data transport technology for consumers… | Acquired | 2 |
| TalkBin | Consumer to business messaging. | Acquired | — |
| Upverter | The future of hardware design. A marketplace for hardware engineering… | Acquired | 11 |
| AppHarbor | .NET Cloud Platform as a Service | Inactive | 1 |
| Assembled | Pivoted to TenXList, a professional network of top college engineers. | Inactive | 2 |
| Balanced | Payments for Marketplaces | Inactive | 11 |
| Beetailer | Facebook stores. | Inactive | 2 |
| Convore | Hosted IRC and so much more. | Inactive | 2 |
| FitFu | New projects | Inactive | 2 |
| Flotype | Third generation of web apps. | Inactive | 2 |
| Hyperink | Ebook publisher. | Inactive | 11 |
| Inporia | Fashion shopping email list. | Inactive | 11 |
| Insight Data Science | Turning PhDs & engineers into data scientists & data engineers | Inactive | 11 |
| Siasto | Siasto is a collaboration tool designed for SMBs who use Google Apps,… | Inactive | 2 |
| SimplyListed | Sell your stuff. | Inactive | 2 |
| TellFi | Google Voice for business. | Inactive | 2 |
| TrustEgg | Trust funds. | Inactive | 2 |
| Tutorspree | Online tutoring marketplace. | Inactive | 51 |
| Userfox | User retention as a service. Drip email | Inactive | 2 |
| Venuetastic | Venue marketplace. | Inactive | 2 |
How this is measured
Measured 2026-09-26 from Y Combinator's company directory. Team size is the number YC lists for the company, where it lists one. Survival here means listed Active; Acquired and Public are shown separately because YC's listing does not say whether an acquisition was a good outcome.
All batchesShut-down companies
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