Y Combinator's directory lists 46 companies in the Winter 2013 batch: 17 Active, 15 Acquired, 0 Public and 14 Inactive. 30% of Winter 2013 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 2013
| Company | What they do | Status | Team |
|---|---|---|---|
| Cheetah | Fastest, easiest, and most affordable way for small business owners… | Active | 2 |
| CircuitLab | Online circuit simulator and electronic schematic editor. | Active | 2 |
| Etleap | Etleap is an ETL solution for creating perfect data pipelines. | Active | 11 |
| Experiment | crowdfunding platform for science | Active | 1 |
| Fivetran | The leader in automated data movement | Active | 1200 |
| Goldbelly | Empowering restaurants and small food makers to ship nationwide. | Active | 125 |
| InfluxData | The platform for building and operating time series applications. | Active | 210 |
| Lawdingo | Lawdingo provides virtual paralegal services to law firms. | Active | — |
| Lollipuff | Online Auctions for Authentic (Women's) Designer Goods | Active | 11 |
| Padlet | Papyrus → Parchment → Paper → Padlet | Active | 65 |
| RADAR | RADAR is building technology to completely transform the in-store… | Active | 120 |
| SimplyInsured | We sell health insurance to small businesses 100% online. | Active | 35 |
| Strikingly | The easiest way to create a beautiful, mobile optimized website. | Active | 99 |
| StyleUp | StyleUp brings effortless joy to getting dressed with daily,… | Active | 10 |
| Watsi | Watsi is the first global crowdfunding platform for medical… | Active | 11 |
| Wefunder | We're Robinhood for pre-IPO startups. Everyone can invest $100. | Active | 35 |
| Wevorce | Changing divorce for good by making it a way less horrible experience… | Active | 11 |
| Bitnami | The App Store for Server Software | Acquired | 75 |
| BuildZoom | BuildZoom is a better way to remodel. We connect homeowners to the… | Acquired | 100 |
| Coin | A mobile wallet that allows you to pay everywhere credit cards are… | Acquired | 11 |
| GrepData | Big Data Analytics | Acquired | 51 |
| Heap | Captures user interactions with no code to generate analytics. | Acquired | 388 |
| Kalibrr | Kalibrr connects SEAsian talent to your local & global jobs. | Acquired | 51 |
| MedXT | Radiology in the cloud. X-rays, CAT scans, MRI's, and… | Acquired | 2 |
| Meldium | Simple password & identity management for teams. Acquired by LogMeIn… | Acquired | 2 |
| North | Wearable computing hardware: biosignal gesture recognition | Acquired | 51 |
| Screenhero | Collaborative Screen Sharing — you each get your own mouse, and… | Acquired | 2 |
| Scuba | Analytics for impatient people. | Acquired | 51 |
| Semantics3 | Data and AI platform for Ecommerce & Cross-Border Logistics | Acquired | 25 |
| Teespring | IMPORTANT: The original YC founders are no longer involved with this… | Acquired | 201 |
| VaycayHero | VaycayHero is a marketplace of professionally managed vacation… | Acquired | 55 |
| Zenefits | HR for small businesses: onboarding, payroll and benefits. | Acquired | 500 |
| Airware | Airware provides end-to-end solutions that enable enterprises to… | Inactive | 51 |
| Appcubator | The easiest way to prototype web applications. | Inactive | — |
| BeatDeck | Music, Metrics... Meritocracy. (Upload Music, Connect your Social… | Inactive | 2 |
| CrowdMed | CrowdMed harnesses the wisdom of crowds to solve difficult medical… | Inactive | 5 |
| FlightCar | FlightCar is the Airbnb of Car Rentals at Airports. We allow people… | Inactive | 51 |
| Logiblock | Logiblock engineers electronics and development tools to dramatically… | Inactive | — |
| Medisas | Medisas builds workflow & collaboration software for hospitals. | Inactive | 11 |
| PayTango | Simple invoicing | Inactive | 2 |
| Posmetrics | Ultra-short feedback surveys on tablets mounted in businesses. Higher… | Inactive | 2 |
| Prophecy Sciences | Predicting workplace performance through neuroscience | Inactive | 2 |
| RoverRide | A universal urban transit app. Given all transportation options… | Inactive | — |
| Swapbox | Stop missing deliveries. Ship to Swapbox and pick up at our kiosks. | Inactive | 2 |
| Swish | Kickstarter for physical products. Shop exclusive product launches. | Inactive | 2 |
| Trainzen | Educational assessments made easy. Eliminating paper-based exams in… | 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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