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.
What the directory lists about Winter 2011
- By the industry YC files each company under: B2B 23, Consumer 14, Fintech 3, Education 2, Healthcare 2, Real Estate and Construction 1.
- Where 45 of the 45 companies say they are based, by the first location each lists: San Francisco, CA, USA (21), San Francisco (10), Chicago, IL, USA (2), Los Angeles, CA, USA (2), New York City, NY (2), Remote (2), Culver City, CA, USA (1), Kailua, HI (1), and 4 other places.
- YC marks 4 companies from this batch as top companies: DrChrono, Fivestars, GOAT Group and HelloSign.
- Earlier names on the entries: Assembled (earlier Assembled (fka Circle) and Assembled (Circle)); Close (earlier Elastic Sales, Close.io and Swipegood); Flotype (earlier Bridge and Flotype (NowJS)); GOAT Group (earlier Airgoat, was Superb, was Grub With Us and GOAT); Hotspots (earlier Moki); Instapainting (earlier Like.fm); Mino Games (earlier Minomonsters); SingleStore (earlier MemSQL); Talkable (earlier Curebit); Tremendous (earlier GiftRocket); You Got Listings (earlier YouGotListings).
Every company in Winter 2011
| Company | What they do | Status | Team |
|---|---|---|---|
| Acunote | Active | — | |
| Close | CRM and sales automation suite | Active | 130 |
| 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 2026-11-10 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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