rhun

In plain words

Rhun is an open-source code editor written in assembly for Windows, Linux, and macOS. It offers tabs, syntax highlighting, fuzzy search, and optional Vim mode, alongside integrated build running, shell commands, and git operations. The editor supports AI features through local models or Claude Code and Codex subscriptions, though these are optional. Designed for speed and minimal resource use, Rhun targets developers seeking a lightweight alternative to heavier editors.

written from the facts on this page · October 2026

From the sources

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

Tabs, syntax highlighting, fuzzy search, and optional Vim mode. Run builds, shell commands, and coding agents beside your code. Review diffs, stage changes, and commit. Draft messages with local open-weight models or Claude Code and Codex using your existing subscriptions. AI is optional. Follow your project’s Claude Code and Codex sessions as theyfrom rhun.app

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