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. Show HN: YC Network Search – Use natural language to find YC people (sena.so)
   3 points by recmend 2 days ago | 1 comments
2. Launch HN: Cactus (YC S25) – AI inference on smartphones (github.com)
   123 points by HenryNdubuaku 20 days ago | 63 comments
3. Launch HN: Webhound (YC S23) – Research agent that builds datasets from the web
   112 points by mfkhalil 13 days ago | 80 comments
4. Launch HN: Flywheel (YC S25) – Waymo for Excavators
   103 points by jashmota 14 days ago | 78 comments
5. Launch HN: Grapevine (YC S19) – A company GPT that actually works (getgrapevine.ai)
   72 points by eambutu 2 days ago | 60 comments
6. Launch HN: Rowboat (YC S24) – Open-source IDE for multi-agent systems (github.com)
   66 points by segmenta 22 days ago | 28 comments
7. Launch HN: Simplex (YC S24) – Browser automation platform for developers (www.simplex.sh)
   53 points by marcon680 6 days ago | 28 comments
8. Launch HN: Ghostship (YC S25) – AI agents that find bugs in your web app
   53 points by jessechoe10 27 days ago | 23 comments
9. Grapevine (YC S19) – A Company GPT That Works (getgrapevine.ai)
   2 points by eambutu 15 days ago | 1 comments
10. Show HN: InsForge AI, Open-Source Alternative to Supabase (YC S20) (insforge.dev)
    2 points by tonychang430 13 days ago | discuss
11. Show HN: ModelKombat – Arena-style battles for coding models (astra.hackerrank.com)
    10 points by rvivek 22 days ago | 4 comments
12. Launch HN: Exa (YC S21) – The web as a database
    412 points by willbryk 5 months ago | 133 comments
13. Launch HN: GPT Driver (YC S21) – End-to-end app testing in natural language
    129 points by cschiller 12 months ago | 82 comments
14. Launch HN: Openlayer (YC S21) – Testing and Evaluation for AI
    94 points by rishramanathan almost 2 years ago | 31 comments
15. Launch HN: ASim (YC S21) – Mobile app that generates mobile apps
    90 points by dli123 6 months ago | 61 comments
16. Show HN: Exa (YC S21) – embeddings search agent with >20x recall than Google (websets.exa.ai)
    28 points by willbryk 7 months ago | 4 comments
17. WorkOS acquires Warrant (YC S21) (workos.com)
    9 points by grinich over 1 year ago | discuss
18. Ask HN: Why is Meticulous (YC S21) still hiring to eliminate E2E tests?
    4 points by resiros about 1 year ago | 2 comments
19. Help me getting contact with METAPHOR Founders (YC S21)
    3 points by Abrahamcarram almost 2 years ago | 1 comments
20. Show HN: Hedgehog (YC S21) On-Chain MPC Self-Custody Automations (hedgehog.app)
    2 points by cadillion over 1 year ago | 2 comments
21. Help me getting contact with Metaphor Founders (YC S21) (www.figma.com)
    1 points by Abrahamcarram almost 2 years ago | 1 comments
22. Show HN: Numscript, a declarative language to model financial transactions (playground.numscript.org)
    202 points by superzamp about 1 year ago | 47 comments
23. Show HN: A mobile app that generates mobile apps in 30 secs
    10 points by dli123 10 months ago | 4 comments
24. Show HN: ASim – generate functional mobile apps instantly on your phone (asim.sh)
    10 points by dli123 about 1 year ago | discuss
25. 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
26. Show HN: ASim – generate usable mobile apps instantly (asim.sh)
    5 points by dli123 about 1 year ago | discuss
27. Show HN: Syntro.io (syntro.io)
    4 points by maomorales about 1 month ago | discuss
28. Sharing Economy Thrived with Consumers but Lags in Corporate World. Until Now
    2 points by Stephen_Roamr 8 months ago | 1 comments
29. Tell HN: When to apply to Y Combinator (YC S22 alum advice)
    4 points by artembugara over 1 year ago | discuss
30. Launch HN: Airhart Aeronautics (YC S22) – A modern personal airplane
    738 points by n_ermosh about 1 year ago | 615 comments
31. Launch HN: Sorcerer (YC S24) – Weather balloons that collect more data
    365 points by tndl about 1 year ago | 172 comments
32. Launch HN: Silurian (YC S24) – Simulate the Earth
    338 points by rejuvyesh about 1 year ago | 141 comments
33. 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
34. Launch HN: Skyvern (YC S23) – open-source AI agent for browser automations (github.com)
    327 points by suchintan 12 months ago | 74 comments
35. Launch HN: Rosebud (YC S19) – Turn game descriptions into browser games
    293 points by lishali88 almost 2 years ago | 101 comments
36. Launch HN: Undermind (YC S24) – AI agent for discovering scientific papers
    292 points by jramette about 1 year ago | 126 comments
37. Launch HN: Diversion (YC S22) – Cloud-Native Git Alternative
    280 points by sasham over 1 year ago | 423 comments
38. Launch HN: Stack Auth (YC S24) – An Open-Source Auth0/Clerk Alternative (github.com)
    280 points by n2d4 about 1 year ago | 141 comments
39. Launch HN: Hyprnote (YC S25) – An open-source AI meeting notetaker
    270 points by yujonglee 2 months ago | 180 comments
40. Launch HN: Muddy (YC S19) – Multiplayer browser for getting work done
    252 points by lele0108 over 1 year ago | 110 comments
41. Launch HN: Morph (YC S23) – Apply AI code edits at 4,500 tokens/sec
    217 points by bhaktatejas922 3 months ago | 185 comments