rhun

rhun is a small code editor written in assembly that provides built-in terminal, Git, and AI-assisted development features.

Rhun is a code editor written in assembly designed to remain lightweight while providing essential development tools. It includes a built-in terminal emulator supporting 24-bit color, scrollback, mouse reporting, and alternate-screen functionality. The editor features standard coding capabilities like tabs, syntax highlighting, fuzzy search, and an optional Vim mode. Integration with Git allows for staging, diffs, and viewing commit history. Users can generate commit messages using a local model or by connecting their Claude Code or Codex subscription. It also tracks active Claude Code and Codex sessions within a project.

rhun at a glance

Best for: Software engineer
Runs on: Windows, Linux, macOS
Pricing: Free
Released: October 2026
Category: AI coding tool
Website: rhun.app

Key features

Assembly language codebase
Built-in terminal emulator with 24-bit color
Git integration with staging and diffs
AI-assisted commit message generation
Optional Vim mode
Multiple customizable light and dark themes
Automatic theme switching with Omarchy

Use it for

Editing code with a small and fast application
Managing Git workflows and commits directly within the editor
Generating commit messages using AI models
Monitoring project sessions from Claude Code or Codex

Alternatives to rhun

claudecode.nvim — Adds native AI coding assistant functionality to Neovim.
jevgrep — Reduces coding agent costs by providing targeted, relevant repository context.
Ret — Manage multiple AI coding agents across projects from one unified desktop interface.
ModLens — Converts screenshots and charts into structured JSON data for coding agents.
OpenCode — Works with 75+ model providers, local models, and existing subscriptions
TRAE — It features an autonomous coding agent that drives the entire development process.
Hermes IDE — Run different coding agents side by side in one interface with centralized reviews.
uithub — Provides immediate full repository context for LLMs by changing one URL letter.
Git AI — It moves work to the server and handles concurrent tasks without standard Git bottlenecks.
Sphinx — Requires understanding of agent-generated code before shipping.
Agent Archive — Hand off coding sessions between Claude Code, Codex, and Cursor across machines.
Repomix — Packages entire codebases into single files for AI context.

All rhun alternatives