Best of ProductHunt

1. Public APIs – Find a public API for your next project
2. unloved – marketplace for pre-owned tech subscriptions
3. Scanly – Free contactless digital menus management
4. Thank you for reading – Personalized Substack summaries
5. Brainie – Music patterns to improve deep work, relaxation, and sleep.
6. Guided Annual Review by Reflection.app – A guided review to help you make sense of and grow from 2020
7. typewriting.ink – Send personalised animated typing messages
8. Add to Calendar Generator – Generate 'Add to Calendar' buttons for your website
9. Rake – One-stop messaging platform for all stakeholders
10. Notes by ILLU – Capture important moments in your meetings effortlessly.

Best of HackerNews

1. fuelcellsworks.com – Photocatalyst splits water into H and O2 at quantum efficiency near 100%
2. roadandtrack.com – 1937 film explains how a car differential works
3. mukulrathi.co.uk – A Complete Guide to LLVM for Programming Language Creators
4. tennessean.com – ATT services down due to bombing in Nashville
5. nedbatchelder.com – Print this file, your printer will jam (2008)
6. spokesman.com – Salmon spawning in the upper Columbia River, first in 80 years
7. dave.tf – Fun with IP address parsing
8. jsomers.net – I reverse engineered Google Docs to play back any document's keystrokes (2014)
9. djharper.dev – Executable PNGs
10. github.com – Show HN: Simple-graph – a graph database in SQLite