Alternatives

Products that do what Foundertrace – chain of YC startups founded by its employees does

Inspired by PG’s tweet about a chain of 4 YC startups where the founder worked at a YC startup, I vibe coded and generated these genealogy chains for all ~6k YC startups. And to make these trees easily accessible I packaged them into a hosted webapp. Few noteworthy YC startups which have had huge impact in YC ecosystem Airbnb - 83 YC startups spawned Stripe - 67 YC startups spawned Dropbox - 50 YC startups spawned Justin.tv/Twitch - 47 YC startups spawned More recently founded YC startups which have spawned a lot more YC startups Rappi - 21 YC startups spawned Brex - 20 YC startups…

1. 1
   FounderTrace▲20

   Chain of YC startups founded by its employees

   Dec 2025

2. 2
   Y Combinator Co-founder Matching▲644

   YC’s free online platform to help you find your co-founder

   2021 · ycombinator.com

3. 3
   YC Library▲811

   The new hub for YC's startup videos, essays, podcasts & more

   2023 · ycombinator.com

4. 4
   Startup School for Future Founders▲514

   YC's free 6-week program for aspiring founders

   2020

5. 5
   Startup School 2019▲448

   Learn how to start a startup with YC for free

   2019

6. 6AM
   A Map of All YC Companies (5,300 Startups by Batch and Location)▲74

   2025 · yc.foundersaround.com

7. 7
   FounderPool▲469

   De-Risking startup founders by pooling equity

   2020

8. 8
   The YC Founder Directory▲226

   Discover the 9,000 founders who went through YC

   2023

9. 9
   Startup School Live 2022▲175

   Learn how to start a startup, with help from Y Combinator

   2022

10. 10WA
    Work at a Startup – Find a Job at a YC Company▲210

    2017 · workatastartup.com

11. 11
    Startups.RIP▲205

    Rebuild 1,738+ dead YC startups with AI

    Apr 2026

12. 12
    ExploreYC ▲168

    Your data layer for Y Combinator's startup ecosystem

    May 2026 · exploreyc.com

13. 13
    YC Directory▲400

    Discover YC companies

    2020

14. 14
    YC Rejection▲392

    Share your YC application and get a YC rejection email

    2023

15. 15
    Startup School Winter 2020▲494

    Learn how to start a startup with YC for free

    2019

16. 16
    ExploreYC▲574

    Open-source API for Y Combinator & a16z company data

    Jul 2026 · exploreyc.com

17. 17
    Work at a Startup - from Y Combinator▲179

    One common application for hundreds of top engineering jobs.

    2018

18. 18
    What YC Is Really Betting On?▲170

    An X-ray of 793 YC startups

    Feb 2026

19. 19
    Founder Finds▲585

    Weekly habits & productivity hacks for bootstrapped founders

    2022

20. 20
    Founder Growth Space▲386

    Every template you'll ever need to grow your startup

    2023

21. 21
    Founderpath▲690

    Raise $10k-$1m in 72 hours, free revenue analytics

    2020 · founderpath.com

22. 22
    YCensus▲93

    A census of Y Combinator startups and their founders

    2018

23. 23
    Founder Resources▲442

    500+ curated resources, templates & tools for startups

    2021

24. 24FL
    Founders launching startups on Twitch▲265

    2018 · 24hrstartup.com

Ranked by how close each launch is in meaning, then by votes. Refine with a description →