MacPacker – open-source archive manager for macOS, now edits ZIPs
Archive manager and 7zip replacement for macOS. Preview (nested) archives without extracting them. Extract single files. - sarensw/MacPacker
What it does
The archive manager for macOS that should have existed all along. Browse archives like folders, preview files without extracting, and drag out only the ones you need. MacPacker is a free and open source archive manager for macOS. It opens 40+ archive, disk image, and compression formats, lets you peek inside without extracting, drills into nested archives, and hands you exactly the files you want via drag & drop. Open source, because essential tools should be free. Inspired by 7-Zip, but built natively for thefrom github.com
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Open-source GTM skills for technical founders
Dev tools · 29d ago · gtmcofounder.com

OpenTrailPaper is open-source bike computer firmware for the LilyGO T5S3 4.7" E-Paper PRO. It supports offline maps, GPX routes, FIT recording and Bluetooth sensors.
Dev tools · 1d ago · opentrailpaper.com

Launched alongside, August 2026
the whole month →- TL
Life & fun · 10d ago · louisabraham.github.io


- SA
Hello HN! I found that picking out plausible but diverse skin tones for my digital art and game development projects was kind of difficult, and I got curious about if there was a way to define a color space that made it easy. I've built a color picker and procedural generation algorithm based on the space as well as a bunch of other fun js features and demos throughout the page that use the equations. If you find it interesting, I have lots of explanations of how I built it and what properties the space has. The methodology might be a bit shaky, but hopefully the result is as helpful for…
Life & fun · Aug 2026 · toneyalexander.github.io


I trained a 125M-parameter transformer to autocomplete piano performances in real time (~108 notes/sec on an iPhone 15). The idea is basically GitHub Copilot or Tabnine, except instead of prompting it with code, you prompt it by playing a few notes on a MIDI piano. The model then continues what you played, entirely on-device. The app is free if anyone wants to try it. Happy to answer questions about the model, training, Core ML, or the many things that didn't work.
AI · 17d ago · simedw.com