Hackernews posts about YC S21

YC S21 is the 2021 class of Y Combinator, a well-known startup accelerator and investor that provides funding and support to early-stage companies.

1. Launch HN: Poly (YC S22) – Cursor for Files
   64 points by aabhay 2 days ago | 67 comments
2. Show HN: Cancer diagnosis makes for an interesting RL environment for LLMs
   46 points by dchu17 10 days ago | 20 comments
3. Show HN: Spine AI – Visual workspace to think across multiple AI models (app.getspine.ai)
   11 points by akshay_budhkar 13 days ago | discuss
4. Infracost (YC W21) Has Raised a $15M Series A: Shifting FinOps Left (www.infracost.io)
   3 points by hkh 4 days ago | 1 comments
5. Jiga (YC W21) raises $12M to solve $1T mechanical parts sourcing problem (www.axios.com)
   1 points by grmmph 4 days ago | discuss
6. Launch HN: Exa (YC S21) – The web as a database
   412 points by willbryk 7 months ago | 133 comments
7. Launch HN: GPT Driver (YC S21) – End-to-end app testing in natural language
   129 points by cschiller about 1 year ago | 82 comments
8. Launch HN: Openlayer (YC S21) – Testing and Evaluation for AI
   94 points by rishramanathan almost 2 years ago | 31 comments
9. Launch HN: ASim (YC S21) – Mobile app that generates mobile apps
   90 points by dli123 8 months ago | 61 comments
10. Show HN: Exa (YC S21) – embeddings search agent with >20x recall than Google (websets.exa.ai)
    28 points by willbryk 9 months ago | 4 comments
11. WorkOS acquires Warrant (YC S21) (workos.com)
    9 points by grinich over 1 year ago | discuss
12. Ask HN: Why is Meticulous (YC S21) still hiring to eliminate E2E tests?
    4 points by resiros over 1 year ago | 2 comments
13. Show HN: Hedgehog (YC S21) On-Chain MPC Self-Custody Automations (hedgehog.app)
    2 points by cadillion over 1 year ago | 2 comments
14. Show HN: Numscript, a declarative language to model financial transactions (playground.numscript.org)
    202 points by superzamp about 1 year ago | 47 comments
15. Show HN: A mobile app that generates mobile apps in 30 secs
    10 points by dli123 12 months ago | 4 comments
16. Show HN: ASim – generate functional mobile apps instantly on your phone (asim.sh)
    10 points by dli123 about 1 year ago | discuss
17. Show HN: Iterate, evaluate, and monitor LLM-products in a Notion-like workspace (www.loom.com)
    9 points by ArshDilbagi over 1 year ago | discuss
18. Show HN: ASim – generate usable mobile apps instantly (asim.sh)
    5 points by dli123 about 1 year ago | discuss
19. Show HN: Syntro.io (syntro.io)
    4 points by maomorales 3 months ago | discuss
20. Sharing Economy Thrived with Consumers but Lags in Corporate World. Until Now
    2 points by Stephen_Roamr 9 months ago | 1 comments
21. Show HN: YC Network Search – Use natural language to find YC people (sena.so)
    3 points by recmend about 2 months ago | 1 comments
22. Launch HN: Cactus (YC S25) – AI inference on smartphones (github.com)
    123 points by HenryNdubuaku 2 months ago | 63 comments
23. Tell HN: When to apply to Y Combinator (YC S22 alum advice)
    4 points by artembugara over 1 year ago | discuss
24. Launch HN: Airhart Aeronautics (YC S22) – A modern personal airplane
    738 points by n_ermosh over 1 year ago | 615 comments
25. Launch HN: Sorcerer (YC S24) – Weather balloons that collect more data
    365 points by tndl over 1 year ago | 172 comments
26. Launch HN: Silurian (YC S24) – Simulate the Earth
    338 points by rejuvyesh about 1 year ago | 141 comments
27. Launch HN: Haystack (YC S24) – Visualize and edit code on an infinite canvas (github.com)
    328 points by akshaysg about 1 year ago | 173 comments
28. Launch HN: Skyvern (YC S23) – open-source AI agent for browser automations (github.com)
    327 points by suchintan about 1 year ago | 74 comments
29. Launch HN: Rosebud (YC S19) – Turn game descriptions into browser games
    293 points by lishali88 almost 2 years ago | 101 comments
30. Launch HN: Undermind (YC S24) – AI agent for discovering scientific papers
    292 points by jramette over 1 year ago | 126 comments
31. Launch HN: Diversion (YC S22) – Cloud-Native Git Alternative
    280 points by sasham almost 2 years ago | 423 comments
32. Launch HN: Stack Auth (YC S24) – An Open-Source Auth0/Clerk Alternative (github.com)
    280 points by n2d4 over 1 year ago | 141 comments
33. Launch HN: Hyprnote (YC S25) – An open-source AI meeting notetaker
    270 points by yujonglee 4 months ago | 180 comments
34. Launch HN: Muddy (YC S19) – Multiplayer browser for getting work done
    252 points by lele0108 over 1 year ago | 111 comments
35. Launch HN: Morph (YC S23) – Apply AI code edits at 4,500 tokens/sec
    217 points by bhaktatejas922 5 months ago | 185 comments