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Rhun, an open-source assembly code editor, adds optional AI features

A new open-source code editor named Rhun has been released, written entirely in assembly language. The tool is designed to be lightweight and fast, offering core features like tabs, syntax highlighting, fuzzy search, and optional Vim mode. It allows users to run builds, shell commands, and coding agents directly beside their code, with built-in support for reviewing diffs and committing changes.

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Key points

  • Rhun is an open-source code editor written in assembly language.
  • It supports optional AI integration with local models, Claude Code, and Codex.
  • Available for Linux, macOS, and Windows with 39 themes.

The editor integrates AI capabilities as an optional feature. Users can draft messages using local open-weight models or connect to Claude Code and Codex via existing subscriptions. It also allows users to follow project sessions for these agents. The software supports 39 light and dark themes.

Rhun is available for Linux and macOS via a terminal install script and for Windows as a downloadable ZIP file. The project emphasizes keeping the editor light to maintain flow, positioning AI as a helper rather than the core interface.

Full story from rhun.app · by Vladyslav Shvedov · via Hacker NewsOpen source ↗

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

rhun.app · 1 October 2026

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This text was published by rhun.app and written by Vladyslav Shvedov. It is reproduced here with attribution so you can read it in full; the rights remain with the publisher. Read it at the source ↗

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