List of Y Combinator startups

{{Short description|none}}

{{Use mdy dates|date=April 2025}}

The following notable startups have completed the Y Combinator Accelerator program.{{Cite web |last=Shunina |first=Dasha |title=To Accelerate Or Not? How To Choose The Right Program For Your Startup |url=https://www.forbes.com/sites/dariashunina/2024/07/30/to-accelerate-or-not-how-to-choose-the-right-program-for-your-startup/ |access-date=2025-03-21 |website=Forbes |language=en}}

Mike Isaac described Y Combinator as: "Y Combinator accepts batches of start-ups twice a year in a semester-like system and gives them money, advice and access to a vast network of start-up founders and technologists who can advise them."{{cite web|url=https://www.nytimes.com/2015/10/16/technology/y-combinator-will-fund-later-stage-companies.html|title=Y Combinator Will Fund Later-Stage Companies|date=16 October 2015|work=The New York Times}}

2005−2010

{{Div col|colwidth=15em}}

  • 1000Memorieshttps://web.archive.org/web/20111101074051/http://www.readwriteweb.com/archives/funding_for_1000memories_-_a_nod_to_the_power_of_d.php#
  • 280 Northhttps://www.cbinsights.com/company/280-north
  • Airbnbhttps://www.businessinsider.com/how-y-combinator-saved-airbnb-2020-2
  • AppJethttps://techcrunch.com/2007/12/12/appjet-makes-simple-web-apps-a-breeze/
  • Biographicon
  • Bumphttps://www.businessinsider.com/david-lieb-y-combinator-group-partner-bump-google-photos-2024-4
  • Clustrixhttps://venturebeat.com/business/y-combinators-clustrix-rolls-out-databases-that-scale/
  • Disqushttps://wellfound.com/company/disqus/funding
  • Dropboxhttps://medium.com/the-entrepreneurs-manifesto/dropbox-the-idea-viral-video-breakthrough-y-combinator-3016ca1ca52b
  • Ginkgo Bioworkshttps://www.businessinsider.com/y-combinator-ginkgo-partner-give-startups-access-biology-tools-2019-9
  • Herokuhttps://venturebeat.com/business/heroku-founder-y-combinator-developer-tools-request-is-a-very-big-deal/
  • Homejoyhttps://www.vanityfair.com/news/2016/06/y-combinator-smart-city-research-project?srsltid=AfmBOoqdc8qLgHbIKYA26SrYI7xP64pRRXqCvrue51RWft3ncdQlwTk2
  • Justin.tvhttps://www.michaelseibel.com/
  • Listiahttps://www.ycdb.co/company/listia
  • Loopthttps://mixergy.com/interviews/yc-group-with-sam-altman/
  • Mixpanelhttps://suhaild.medium.com/mixpanels-y-combinator-application-in-2009-34b5d30dbc12
  • NewsBlurhttps://techcrunch.com/2012/07/30/yc-backed-newsblur-takes-feed-reading-back-to-its-basics/
  • Ninitehttps://tracxn.com/d/companies/ninite/__QJnGdsRmYbAr5vrPZC7Ed5BlM2-o1_Eu6GUKMnBdwpw/funding-and-investors
  • Octoparthttps://techcrunch.com/2011/05/18/octopart-the-little-startup-that-hung-in-there/
  • OMGPophttps://www.inc.com/christine-lagorio/sam-altman-yc-monopoly.html
  • Optimizelyhttps://techcrunch.com/2012/05/30/optimizely-funding/
  • OwnLocalhttps://wellfound.com/company/ownlocal/people
  • PagerDutyhttps://www.s28capital.com/team/andrew-miklas/
  • Parakeyhttps://www.wsj.com/articles/BL-VCDB-7867
  • Poll Everywherehttps://www.businessinsider.com/y-combinator-paul-graham-says-moderates-should-vote-for-kamala-2024-10
  • Posteroushttps://techcrunch.com/2011/01/14/posterous-cofounder-garry-tan-steps-down-heads-to-yc/
  • Recurse Center (Hacker School)https://www.cbinsights.com/company/hacker-school
  • Reddithttps://www.entrepreneur.com/business-news/how-to-start-a-65-billion-business-at-21-years-old-reddit/479210
  • RethinkDBhttps://venturebeat.com/business/ycombinator-announces-newest-class-with-flightcaster-mixpanel-aboard/
  • Scribdhttps://venturebeat.com/business/y-combinator-names-scribd-cofounder-jared-friedman-as-partner/
  • SIRUMhttps://techcrunch.com/2015/03/10/the-drugs-still-work/
  • Songkickhttps://www.musicbusinessworldwide.com/warners-songkick-teams-up-ticketing-and-marketing-company-shoobs1/
  • Stripehttps://www.startupgrind.com/blog/the-collison-brothers-and-story-behind-the-founding-of-stripe/
  • Quorahttps://techcrunch.com/2014/05/11/quora-y-combinator/
  • Virtualminhttps://tracxn.com/d/companies/virtualmin/__4kiGae7WDccfpKumEJVK-UqCteuAfhGXUnlDLHMWP9Q/funding-and-investors
  • Vote.orghttps://www.forbes.com/sites/moiravetter/2016/05/13/what-can-non-profit-startup-vote-org-do-with-y-combinator-seed-funding-in-178-days/
  • WakeMatehttps://thestartupfoundry.com/2011/04/11/wakemate-yc-s09-on-building-their-business-and-their-ycombinator-experience/
  • Weeblyhttps://www.bizjournals.com/sanjose/news/2018/04/27/weebly-square-purchase-y-combinator-valuation.html
  • WePayhttps://www.forbes.com/sites/elizabethwoyke/2012/01/31/wepay-the-online-payment-startup-behind-occupy-wall-street/
  • Xobnihttps://techcrunch.com/2008/07/23/a-xobni-executive-leaves-the-red-hot-startup-but-why/
  • YouOShttps://thenextweb.com/news/10-y-combinator-startups-that-didnt-make-it-but-shouldve
  • Zenterhttps://www.businessinsider.com/10-successful-y-combinator-startups-2012-3

{{div col end}}

2011-2015

{{Div col|colwidth=15em}}

{{div col end}}

2016−2020

{{Div col|colwidth=15em}}

{{div col end}}

2021–2025

References

{{Reflist}}