GoKawiilRhun, an open-source code editor written entirely in assembly, launches on Show HN
A developer released Rhun, an open-source code editor built in assembly language, featuring tabs, syntax highlighting, fuzzy search and an optional Vim mode. It integrates running builds, shell commands and AI coding agents like Claude Code and Codex, supports diff review and committing, and offers 39 light and dark themes.
GoKawiil's interpretation of the reporting above, not reported fact.
Writing a full-featured editor in assembly is unusual given the complexity involved, which could signal the author's interest in performance or minimalism over using higher-level frameworks common in modern editor development. Its integration of AI coding agents alongside manual git workflows reflects a broader trend of blending traditional developer tools with AI assistance.
- Rhun is an open-source code editor written in assembly, posted to Show HN.
- It includes standard editor features plus AI agent integration via Claude Code and Codex.
- Offers 39 themes and supports git-style diff review, staging, and committing.
Source: rhun.app — Vladyslav Shvedov, 2026-10-01
Published there as: “Show HN: Rhun, an open-source code editor written in assembly”
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