List of Y Combinator startups

The following notable startups have completed the Y Combinator Accelerator program. ^[1]

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." ^[2]

2005−2010

• 1000Memories ^[3]
• 280 North ^[4]
• Airbnb ^[5]
• AppJet ^[6]
• Biographicon
• Bump ^[7]
• Clustrix ^[8]
• Disqus ^[9]
• Dropbox ^[10]
• Ginkgo Bioworks ^[11]
• Heroku ^[12]
• Homejoy ^[13]
• Justin.tv ^[14]
• Listia ^[15]
• Loopt ^[16]
• Mixpanel ^[17]
• NewsBlur ^[18]
• Ninite ^[19]
• Octopart ^[20]
• OMGPop ^[21]
• Optimizely ^[22]
• OwnLocal ^[23]
• PagerDuty ^[24]
• Parakey ^[25]
• Poll Everywhere ^[26]
• Posterous ^[27]
• Recurse Center (Hacker School) ^[28]
• Reddit ^[29]
• RethinkDB ^[30]
• Scribd ^[31]
• SIRUM ^[32]
• Songkick ^[33]
• Stripe ^[34]
• Quora ^[35]
• Virtualmin ^[36]
• Vote.org ^[37]
• WakeMate ^[38]
• Weebly ^[39]
• WePay ^[40]
• Xobni ^[41]
• YouOS ^[42]
• Zenter ^[43]

2011-2015

• 7 Cups
• 80,000 Hours
• 9GAG
• AirPair
• Airware
• Algolia
• Bellabeat ^[44]
• Bitnami
• Bluesmart
• Boosted
• BufferBox
• Casetext
• Canopy Labs
• Chaldal.com
• Circle
• Codecademy
• Cofactor Genomics
• Coinbase
• Container Linux (CoreOS Linux)
• CrowdMed
• Creative Market ^[45]
• Cruise (autonomous vehicle)
• Diaspora
• DoorDash
• Double Robotics
• drchrono
• EquipmentShare ^[46]
• Exec
• Experiment
• Firebase
• Flexport
• Fullstack Academy
• Gigster
• GitLab
• Goldbelly
• Gusto
• Hackpad
• HackerRank
• Helion Energy
• Humble Bundle
• Instacart
• Kamcord
• Kickback
• Lanyrd
• LeadGenius
• LendUp
• LightTable
• Lumi
• Matterport
• MemSQL
• Meesho ^[47]
• Meteor
• Move Loot
• Mux ^[48]
• New Story
• Oklo Inc. ^[49]
• Opentrons ^[50]
• OrderAhead
• Parse
• Paribus
• PatientBank ^[51]
• Paystack ^[52]
• Pebble (watch)
• PlanGrid
• Platzi
• Podium ^[53]
• Product Hunt
• Quartzy
• Rigetti Computing
• Science Exchange
• SmartAsset ^[54]
• Socialcam
• Streak
• Strikingly
• Swiftype
• Teespring
• The Muse (The Daily Muse)
• Tilt.com
• True Link
• uBiome
• Unbabel
• Upverter
• Verbling
• Vidyard
• Watsi
• Webflow
• Wefunder
• Zapier
• TriNet Zenefits
• ZeroCater
• Zesty

2016−2020

• Boom Technology
• Brex
• Coub
• Deel Inc.
• Flock Safety ^[55]
• Grey ^[56]
• Legalist ^[57]
• LendEDU
• Lezzoo ^[58]
• Memora Health ^[59]
• Modal Commerce (Drive Motors)
• Momentus space
• Netomi (msg.ai)
• Our World in Data
• OpenSea ^[60]
• Rappi
• Replit
• Scale AI
• Sixa
• Skip
• Tara AI ^[61]
• The Athletic ^[62]
• The Good Food Institute ^[63]
• Upsolve
• Women Who Code
• Writesonic
• Yotta Technologies

2021–2025

• Navattic
• Careerist
• Deel Inc.
• SyntheticFi
• Turing College (edtech company)

References

1. Shunina, Dasha. "To Accelerate Or Not? How To Choose The Right Program For Your Startup". Forbes. Retrieved March 21, 2025.
2. "Y Combinator Will Fund Later-Stage Companies". The New York Times. October 16, 2015.
3. "Funding for 1000Memories - A Nod to the Power of Digital Memories". February 16, 2011. Archived from the original on November 1, 2011.
4. "280 North - Products, Competitors, Financials, Employees, Headquarters Locations".
5. "Airbnb's cofounder makes a compelling argument on why more startups should join the y Combinator accelerator". Business Insider .
6. "AppJet Makes Simple Web Apps a Breeze". December 12, 2007.
7. "Meet David Lieb, y Combinator's newest secret weapon". Business Insider .
8. "Y Combinator's Clustrix rolls out databases that scale". May 4, 2010.
9. https://wellfound.com/company/disqus/funding
10. https://medium.com/the-entrepreneurs-manifesto/dropbox-the-idea-viral-video-breakthrough-y-combinator-3016ca1ca52b
11. "A $4.8 billion biotech wants to trade its expertise for equity in startups looking to manufacture better materials, drugs, and food". Business Insider .
12. "Heroku founder: Y Combinator developer tools request is a very big deal". October 14, 2014.
13. "Ex-Homejoy C.E.O.'s Next Start-Up: An Entire City". Vanity Fair . June 28, 2016.
14. https://www.michaelseibel.com/
15. "Listia - Company Information | YCDB - the y Combinator Database".
16. "Sam Altman on y Combinator, Loopt & Work Habits".
17. "Mixpanel's y Combinator application in 2009". June 26, 2018.
18. "YC-Backed NewsBlur Takes Feed Reading Back to Its Basics". July 30, 2012.
19. "Ninite - 2025 Funding Rounds & List of Investors - Tracxn".
20. "Octopart, the Little Startup That Hung in There". May 19, 2011.
21. https://www.inc.com/christine-lagorio/sam-altman-yc-monopoly.html
22. "A/B Tester Optimizely Raises Funding from Battery and Google Ventures, Plans Mobile Launch". May 31, 2012.
23. https://wellfound.com/company/ownlocal/people
24. "S28 Capital".
25. Geron, Tomio (August 27, 2010). "With Own Incubator on Hold, Facebook Befriends y Combinator". Wall Street Journal.
26. "Y Combinator cofounder Paul Graham lays out why he's voting for Kamala Harris". Business Insider .
27. "Posterous Cofounder Garry Tan Steps Down, Heads to y Combinator". January 15, 2011.
28. "Recurse Center - Products, Competitors, Financials, Employees, Headquarters Locations".
29. https://www.entrepreneur.com/business-news/how-to-start-a-65-billion-business-at-21-years-old-reddit/479210
30. "The YCombinator list: Bump, Mixpanel, JobPic take off with newest class". August 20, 2009.
31. "Y Combinator names Scribd cofounder Jared Friedman as partner". October 8, 2015.
32. "Y Combinator-Backed SIRUM Matches Unused Medicine with Low-Income Patients". March 10, 2015.
33. "Warner's Songkick strikes partnership with ticketing and marketing company Shoobs". May 3, 2024.
34. "The Collison Brothers and Story Behind the Founding of Stripe".
35. "Q: Why Did Quora Join y Combinator? A: It Was Almost Free". May 11, 2014.
36. "Virtualmin - 2025 Funding Rounds & List of Investors - Tracxn".
37. https://www.forbes.com/sites/moiravetter/2016/05/13/what-can-non-profit-startup-vote-org-do-with-y-combinator-seed-funding-in-178-days/
38. "WakeMate (YC S09) on building their business and their YCombinator experience : The Startup Foundry".
39. https://www.bizjournals.com/sanjose/news/2018/04/27/weebly-square-purchase-y-combinator-valuation.html
40. "WePay: The Online Payment Start-Up Behind Occupy Wall Street". Forbes .
41. "A Xobni Executive Leaves the Red-Hot Startup. But Why?". July 24, 2008.
42. "Y Combinator Startups That Should've Made It". July 29, 2012.
43. "The 10 Most Successful y Combinator Startups". Business Insider .
44. "Y Combinator's Top Three Startups from Winter 2014, According to y Combinator Startups". March 28, 2014.
45. "How Aaron Epstein launched and sold Creative Market in only 15 months".
46. "EquipmentShare named to y Combinator top companies list as it expands across Heartland". July 27, 2023.
47. "Prominent startup investor shares a y Combinator one-pager for founders on early-stage funding". January 29, 2025.
48. "Mux raises $20 million to simplify video streaming and analytics". August 14, 2019.
49. "A Sam Altman-Backed Nuclear Power Startup Has Doubled Customer Base Without a Product". The New York Observer . August 15, 2024.
50. "Robots are taking over New York, and Bill Gates is investing". September 13, 2024.
51. "The 48 startups that launched at y Combinator S16 Demo Day 2". August 24, 2016.
52. "Nigerian Fintech Startup Paystack Raises $1.3 Million". Forbes .
53. "Podium Raises $201M in Series D Funding to Accelerate the Digital Evolution for Local Businesses" (Press release).
54. https://www.businesswire.com/news/home/20180620005845/en/SmartAsset-Raises-28-Million-in-Series-C-Funding-Doubling-Its-Venture-Capital-Backing
55. "$275M at $7.5B valuation: Y Combinator's Flock Safety to provide a public safety operating system that eliminates crime, eyeing an IPO — TFN". March 14, 2025.
56. "Nigerian fintech Grey gets backing from y Combinator". February 8, 2022.
57. "Y Combinator Alum Legalist Seeking $400M for Fourth Credit Fund".
58. "Lezzoo Delivers Everything: A Kurdistani Super App and Entrepreneurial Success Story".
59. "Memora Health Provides AI-Enabled Clinical Workflows".
60. "With bids starting at $96,000, a y Combinator founder is selling his shuttered startup as an NFT to 'embrace failing'". Business Insider .
61. "Tara.ai, which uses machine learning to spec out and manage engineering projects, nabs $10M". July 2019.
62. "The Athletic x STRV | Case Study".
63. https://www.fastcompany.com/90221400/y-combinator-is-funding-a-nonprofit-that-advocates-for-meat-alternatives

External links

• "YC Companies" at ycombinator.com