Show HN: Rhun, an open-source code editor written in assembly

Developer vshvedov released Rhun v0.16.2, an open-source code editor written in assembly, available for Linux and macOS via a curl install script and for Windows as a ZIP download. Rhun offers tabs, syntax highlighting, fuzzy search, optional Vim mode, 39 light and dark themes, and built-in diff review, staging, and commit, with optional AI features that run local open-weight models or Claude Code and Codex using existing subscriptions. The editor is positioned as a lightweight alternative that keeps AI assistance optional while letting users follow Claude Code and Codex sessions beside their code.

AI does the heavy lifting. Keep your code editor light. Less weight. More flow. A small, fast code editor. Written in assembly. Explore rhun 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 they work. Choose from 39 light and dark themes. Preview a few here. Rhun Dark 6 OF 39 THEMES Terminal install · Linux & macOS curl -fsSL https://github.com/vshvedov/rhun/releases/latest/download/install.sh | sh Windows: Download the ZIP https://github.com/vshvedov/rhun/releases/download/v0.16.2/rhun-0.16.2-windows-x86 64.zip , extract it, and open rhun.exe .