Hackernews posts about W21

W21 is a year class in Y Combinator's (YC) accelerator program, indicating that these are startups that were part of the Winter 2021 batch.

1. Show HN: TalkToSales makes websites voice-controlled (talktosales.com)
   2 points by kolchinski 4 days ago | discuss
2. Launch HN: Enhanced Radar (YC W25) – A safety net for air traffic control
   166 points by kristian1109 28 days ago | 113 comments
3. Launch HN: Modernbanc (YC W20) – Modern and fast accounting software
   123 points by gregorygev 13 days ago | 114 comments
4. Launch HN: Augento (YC W25) – Fine-tune your agents with reinforcement learning
   94 points by lmeierhoefer 1 day ago | 55 comments
5. Launch HN: Sift Dev (YC W25) – AI-Powered Datadog Alternative
   82 points by Akula112233 21 days ago | 56 comments
6. Launch HN: Cuckoo (YC W25) – Real-time AI translator for global teams
   81 points by yonghee 29 days ago | 29 comments
7. Launch HN: Cenote (YC W25) – Back Office Automation for Medical Clinics
   61 points by ansong99 26 days ago | 52 comments
8. Rippling (YC W17) Sues HR Software Rival Deel (YC W19) for Trade Secret Theft (news.bloomberglaw.com)
   4 points by alephnerd 15 days ago | 1 comments
9. Eric Schmidt Joins Relativity Space (YC W16) as CEO (www.nytimes.com)
   3 points by walterbell 22 days ago | discuss
10. 10 Startups to Watch from Y Combinator's W25 Demo Day (techcrunch.com)
    2 points by aspenmayer 17 days ago | discuss
11. The McLaren W1 Can Drive in Two Gears at Once (www.motor1.com)
    2 points by mizzao 24 days ago | discuss
12. Bugatti Bolide review: The grand finale to the legendary W16 (www.topgear.com)
    1 points by teleforce 24 days ago | discuss
13. Show HN: A big tech dev experience for an open source CMS (contentfoundry.com)
    58 points by randall 25 days ago | 28 comments
14. Show HN: Browser-Use MCP for Claude that works without an API key (github.com)
    2 points by vortex_ape 15 days ago | discuss
15. Show HN: Browser-Use MCP for Claude that works without an API key (twitter.com)
    1 points by vortex_ape 13 days ago | 2 comments
16. Show HN: GitHub Leaderboard for Cohorts (ship-tracker.vercel.app)
    1 points by alexakayman 27 days ago | discuss
17. Note to the C++ standards committee members on profiles and safety [pdf] (www.open-std.org)
    8 points by todsacerdoti 13 days ago | 2 comments
18. How the Wealth Was Won: Factor Shares as Market Fundamentals [pdf] (www.nber.org)
    2 points by luu 5 days ago | discuss
19. TrapC: Memory Safe C Programming with No UB [pdf] (www.open-std.org)
    2 points by Tomte 19 days ago | discuss
20. The resolution of the Bitcoin experiment (2016) (blog.plan99.net)
    1 points by Tomte 4 days ago | discuss
21. The Problem of the Problem (2013) [pdf] (cpb-us-w2.wpmucdn.com)
    1 points by Tomte 4 days ago | discuss
22. Types Don't Know (www.open-std.org)
    1 points by ibobev 4 days ago | discuss
23. Anthropic raises $3.5B at $61.5B valuation (www.nytimes.com)
    194 points by w10-1 29 days ago | 139 comments
24. Launch HN: ASim (YC S21) – Mobile app that generates mobile apps
    39 points by dli123 about 7 hours ago | 41 comments
25. Senate Bill 21, Establishing the Texas Bitcoin Reserve (www.ltgov.texas.gov)
    19 points by ttyprintk 25 days ago | 37 comments
26. 21-year old dev destroys LeetCode, gets kicked out of school (www.youtube.com)
    13 points by amrrs 5 days ago | 5 comments
27. IRS to overhaul its tech after finding $21.1B in fraud in just two years (fortune.com)
    13 points by bentobean 3 days ago | discuss
28. PlayAI deploys on Groq silicon, hitting 215 char/s (blog.play.ai)
    8 points by legofan94 5 days ago | 1 comments
29. Hype has Replaced Hope in the 21st Century (www.techpolicy.press)
    8 points by doom2 5 days ago | discuss
30. Cloudflare incident on March 21, 2025 (blog.cloudflare.com)
    6 points by realchaika 8 days ago | discuss