I'm Mathis, also known as humunkulud. I build tools for developers, apps for everyday life, and the Linux setup they run on.
I like systems I can still understand six months later: a real problem, a few moving parts, and something useful at the end.
Currently building → Sorrel
Version control designed for humans and parallel AI agents. A Rust engine and CLI, a collaboration Hub, and a bidirectional Git bridge. Still in alpha; the status page separates what works from what's planned.
| Project | The idea | Built with |
|---|---|---|
| Museum Rodenberg | Bring local history online: exhibitions, artifacts, QR lookup, and seven languages. | React · TypeScript · Convex |
| Würfelblock / Kniffeldigi | Roll real dice. Keep a shared Kniffel or Yatzy scorecard on your phones. | JavaScript · Cloudflare Workers · D1 |
| 4=10 solver · Try it | Drag four digits, choose your operators, and make ten. Exact arithmetic, entirely in the browser. | Vanilla JavaScript · Cloudflare |
| Arch config | Dotfiles, package profiles, setup scripts, and a shared agent kit for my laptop and desktop. | Arch Linux · Hyprland / DWM · Neovim · Zsh |
Rust · TypeScript · JavaScript
React / Solid / Vue · Cloudflare Workers · Docker · Arch Linux · Neovim
Outside developer tools, I keep coming back to judo, maths, and software that makes small everyday jobs easier.
Found something useful here? Issues and feedback belong in the relevant project.



