Rhun, an open-source code editor written in assembly

About Rhun, an open-source code editor written in assembly

A small, fast code editor for Windows, Linux and macOS. Written in assembly.

In the maker’s words

I found that I'm not using even 1/3 of vim/vscode features anymore. That's wht I'm building rhun - a small code editor for Linux, Windows and Apple silicon Macs. It obviously has Vim mode, a terminal, Git diffs and a panel for Claude Code or Codex sessions. The editor and pixel renderer share an x86-64 assembly core. For Apple silicon, a build-time translator converts that core to AArch64, with separate platform adapters around it. The latest release can draft commit messages using a local Ollama model or an existing Claude Code or Codex subscription. It's a solo project, MIT licensed and still early.

Where people found it

• Hacker NewsShow HN: Rhun, an open-source code editor written in assembly62 points49 comments2 days ago