Hacker News Highlights

This is a recap of the top 10 posts on Hacker News on Feb 14, 2025.

Privacy Pass Authentication for Kagi Search
https://blog.kagi.com/kagi-privacy-pass
https://news.ycombinator.com/item?id=43040521

LibreOffice still kicking at 40, now with browser tricks and real-time collab
https://www.theregister.com/2025/02/13/libreoffice_wasm_zetaoffice/
https://news.ycombinator.com/item?id=43038200

Phind 2: AI search with visual answers and multi-step reasoning
https://www.phind.com/blog/phind-2
https://news.ycombinator.com/item?id=43039308

Show HN: SQL Noir – Learn SQL by solving crimes
https://www.sqlnoir.com
https://news.ycombinator.com/item?id=43041827

What if Eye...?
https://eyes.mit.edu/
https://news.ycombinator.com/item?id=43043063

I built an AI company to save my open source project
https://timefold.ai/blog/how-i-built-an-ai-company-to-save-my-open-source-project
https://news.ycombinator.com/item?id=42999454

SQL pipe syntax available in public preview in BigQuery
https://cloud.google.com/bigquery/docs/pipe-syntax-guide
https://news.ycombinator.com/item?id=42998904

Who exactly needs to get approval from an institutional review board (IRB)?
https://dynomight.net/irb/
https://news.ycombinator.com/item?id=43038395

Basis of the Kalman Filter [pdf]
https://github.com/tpn/pdfs/blob/master/Understanding%20the%20Basis%20of%20the%20Kalman%20Filter%20Via%20a%20Simple%20and%20Intuitive%20Derivation%20%282012%29.pdf
https://news.ycombinator.com/item?id=43029314

MapTCHA, the open-source CAPTCHA that improves OpenStreetMap [video]
https://fosdem.org/2025/schedule/event/fosdem-2025-5879-maptcha-the-open-source-captcha-that-improves-openstreetmap/
https://news.ycombinator.com/item?id=43040382