Helicon

Helicon is an open-source desktop app and VS Code extension for Meta's Muse Code CLI that provides threads and inline diffs.

Helicon is an open-source desktop app, web app, and VS Code extension that wraps Meta's Muse Code CLI in a graphical interface. It groups projects by working directory with tasks and sessions, supports session history and resume, surfaces approvals honestly, and features a file viewer beside the thread. It runs on Windows, macOS, and Linux, supporting native Windows or WSL2, and uses the user's existing muse login. The app connects via the Muse Session Protocol using local SQLite storage for persistence. It is designed for developers who use Meta's Muse Code CLI and want a Codex or Claude-style desktop or browser experience.

Helicon at a glance

Best for: Software engineer
Runs on: Windows, macOS, Linux, Web, VS Code, open source
Pricing: Free and MIT-licensed
Released: October 2026
Category: AI coding tool
Website: github.com/harjjotsinghh/helicon

Key features

Group projects by working directory with tasks and sessions
Surface approvals honestly without bypassing them
Run Windows natively or inside WSL2 with path translation
Browse projects and read highlighted source in a side file viewer
Track usage plan meters and weekly caps in the sidebar
Steer goals with a dedicated panel or composer
Control background work and running tool calls

Use it for

Manage coding agent sessions with a graphical user interface
Review inline diffs and inspect file changes
Monitor plan usage limits and steering goals
Resume sessions started from the terminal TUI

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