A small, fast code editor written in assembly
rhun is a small, fast code editor written in assembly, available for Windows, Linux and macOS. It bundles editing, a terminal, git tooling, and optional AI agent integration in a lightweight package, and is open source under the MIT license.
Tabs, syntax highlighting, fuzzy search, and an optional Vim mode for keyboard-driven editing.
Run builds, shell commands, and coding agents beside your code without leaving the editor.
Review diffs, stage changes, and commit directly from the editor.
Draft messages with local open-weight models, or use Claude Code and Codex with your existing subscriptions. AI is optional. Follow your project's Claude Code and Codex sessions as they work.
Choose from 39 light and dark themes.
A lightweight code editor written in assembly, focused on keeping your editor light.
On Linux and macOS, install via a terminal one-liner (curl piped to a shell script); on Windows, download a ZIP, extract it, and open rhun.exe.
Write code in a tabbed editor with syntax highlighting and fuzzy search, run builds and shell commands in the side terminal, and review diffs, stage changes, and commit with git.
If you want AI assistance, connect local open-weight models or Claude Code and Codex using your existing subscriptions, and follow agent sessions as they work on your project.
rhun is free and open source under the MIT license. No paid plans are mentioned.
Free (MIT license)
Downloadable for Windows, Linux, and macOS from GitHub releases.
rhun is a small, fast code editor written in assembly, combining editing, a terminal, git tooling, and optional AI agent support in one lightweight tool.
rhun runs on Windows, Linux, and macOS.
Yes. rhun is open source under the MIT license, with releases available on GitHub.
On Linux and macOS, install via the terminal with a curl command that runs the install script from the GitHub releases. On Windows, download the ZIP, extract it, and open rhun.exe.
No. AI is optional. You can use rhun purely as an editor with its terminal and git features, or connect AI agents if you want them.
rhun works with Claude Code and Codex using your existing subscriptions, and can draft messages with local open-weight models.
Yes, rhun includes an optional Vim mode alongside tabs, syntax highlighting, and fuzzy search.
rhun ships with 39 light and dark themes to choose from.
