Hackernews posts about S21

S21 is a class of companies that received funding from Y Combinator's Summer 2021 batch of startups.

1. Launch HN: Hyprnote (YC S25) – An open-source AI meeting notetaker
   270 points by yujonglee 25 days ago | 180 comments
2. Launch HN: Channel3 (YC S25) – A database of every product on the internet
   144 points by glawrence13 3 days ago | 98 comments
3. Launch HN: Golpo (YC S25) – AI-generated explainer videos (video.golpoai.com)
   115 points by skar01 10 days ago | 92 comments
4. Launch HN: Embedder (YC S25) – Claude code for embedded software
   113 points by bobwei1 8 days ago | 52 comments
5. Launch HN: Uplift (YC S25) – Voice models for under-served languages
   112 points by zaidqureshi 5 days ago | 51 comments
6. Launch HN: Cyberdesk (YC S25) – Automate Windows legacy desktop apps
   73 points by mahmoud-almadi 9 days ago | 61 comments
7. Launch HN: Design Arena (YC S25) – Head-to-head AI benchmark for aesthetics
   73 points by grace77 11 days ago | 24 comments
8. Launch HN: Halluminate (YC S25) – Simulating the internet to train computer use
   70 points by wujerry2000 12 days ago | 46 comments
9. Launch HN: Parachute (YC S25) – Guardrails for Clinical AI
   62 points by ariavikram 4 days ago | 35 comments
10. Launch HN: BlankBio (YC S25) – Making RNA Programmable
    60 points by antichronology 1 day ago | 27 comments
11. Launch HN: Skope (YC S25) – Outcome-based pricing for software products
    55 points by benjsm 2 days ago | 45 comments
12. Show HN: Stagewise (YC S25) – Front end coding agent for existing codebases (github.com)
    46 points by juliangoetze 18 days ago | 50 comments
13. Launch HN: Inconvo (YC S23) – AI agents for customer-facing analytics
    38 points by ogham 1 day ago | 23 comments
14. Show HN: (YC S23) OCR that works on the messiest PDFs (www.trycardinal.ai)
    21 points by devijha 16 days ago | 2 comments
15. Show HN: April (YC S25) – Hit Inbox Zero with Just Your Voice While You Drive (apps.apple.com)
    4 points by amusely 8 days ago | 4 comments
16. Intern-S1: A Scientific Multimodal Foundation Model (arxiv.org)
    4 points by anothermathbozo 2 days ago | 1 comments
17. Matrix Live S11E07 – Reflections on Matrix criticism over the last week [video] (www.youtube.com)
    4 points by tcfhgj 22 days ago | discuss
18. Congress Launches Investigation into Flock [YC S17] (www.404media.co)
    2 points by thaumaturgy 15 days ago | discuss
19. Intern-S1: A 241B parameter open-source MoE multimodal model (huggingface.co)
    2 points by linenmerchant 27 days ago | discuss
20. A dedicated skin-to-brain circuit for cool sensation in mice (www.sciencedaily.com)
    26 points by freedomben 22 days ago | discuss
21. Show HN: BrowserOS -- browser agents with GPT-OSS, local llms (github.com)
    12 points by felarof 1 day ago | 2 comments
22. Show HN: Zero Waste Cloud – Finds 20-40% savings in AWS/GCP bills and CO2 impact (zerowastecloud.io)
    8 points by Suedish 23 days ago | 2 comments
23. Show HN: Open-source compliance-as-code for crypto projects (github.com)
    7 points by daivikgoel 28 days ago | 2 comments
24. Show HN: Making AI chat sessions durable to network failures (github.com)
    5 points by infiniteregrets 18 days ago | discuss
25. Show HN: Term – Rust-based data validation with OpenTelemetry (github.com)
    3 points by ericpsimon 24 days ago | discuss
26. Show HN: TyxonQ, A Chinese Full-Stack Quantum Software Framework on Real Machine (github.com)
    1 points by TyxonQ 24 days ago | discuss
27. Bing Search APIs will be retired on 11 August 2025
    1 points by huijzer 26 days ago | discuss
28. 4k NASA employees opt to leave agency through deferred resignation program (www.kcrw.com)
    516 points by ProAm 28 days ago | 724 comments
29. Electricity prices are climbing more than twice as fast as inflation (www.npr.org)
    323 points by geox 7 days ago | 393 comments
30. Class-action suit claims Otter AI records private work conversations (www.npr.org)
    144 points by nsedlet 6 days ago | 48 comments