CADara
Show HN: CADara – I made an open-source in-browser CAD
I built an open-source, local-first alternative to LangSmith
Hey HN. Built this because LangSmith needs a cloud account just to see my own traces. pip install opensmith — everything shows up at localhost:7823. SQLite. No accounts. No config. Fully offline. 800+ downloads in 2 days. Surprised me. Would love honest feedback from this community.
Crit
Crit is a single-binary CLI that opens your file or code diffs in a browser with GitHub-inspired interface. Your favourite agent acts on the feedback and responds back - continue until you're happy. I've been building this for a few months now and it's been helping me a lot juggling parallel conversations with agents, making it easier to actually review the plans they generate and the resulting code - all before it hits GitHub. It also allows you to export the plans to a hosted service (which you can self-host for privacy), to solicit feedback from your team. No account needed, and reviews are automatically deleted after 30 days of inactivity.
Veris
Show HN: Veris – Agent sandboxes with simulated external services
BattleClaws
Show HN: BattleClaws – A battle arena where AI agents fight autonomously
NFC tags are good material for pranks on Android
Show HN: NFC tags are good material for pranks on Android
I built an open-source email builder, alternative to Beefree/Unlayer
Show HN: I built an open-source email builder, alternative to Beefree/Unlayer
Tilde.run
Show HN: Tilde.run – Agent Sandbox with a Transactional, Versioned Filesystem
Red Squares
Show HN: Red Squares – GitHub outages as contributions
Explore color palettes inspired by 3000 master painter artworks
I built PaletteInspiration.com, a browsable archive of color palettes pulled from artworks by 3,000+ master painters (Monet, Vermeer, Raphael, Van Gogh). Why I built it: every color palette generator I tried converged on the same five muted pastels. Painters spent centuries figuring out color and we mostly ignore that body of work when picking colors for digital design. Please share your feedback on the Color Harmony Explorer - drag the wheel to any color and it shows which hues master painters historically paired with it (not only standard complementary, analogous, triadic, etc.) It is solely based on co-occurrence across thousands of real paintings. Not algorithmic color theory rules - actual empirical pairings. No signup, no paywall, no email capture. Just curious what people think.
New Benchmark from SWE-bench team is 0% solved
Show HN: New Benchmark from SWE-bench team is 0% solved
Octopus Code Review is now free for OSI-licensed repos
Show HN: Octopus Code Review is now free for OSI-licensed repos