Mux – A tmux overlay for managing Claude Code sessions
Mux is a tmux overlay that helps manage Claude Code sessions, providing a terminal multiplexer interface for organizing and controlling multiple Claude Code workspaces.
Background
- **tmux** is a terminal multiplexer: it lets you run multiple shell sessions inside a single terminal window, switch between them, and keep processes alive even if you close the terminal.
- **Claude Code** is an AI coding assistant (by Anthropic) that works inside a terminal, helping developers write, edit, and debug code through natural-language conversations.
- **Mux** is a lightweight wrapper script that sits on top of tmux, specifically designed to manage multiple Claude Code sessions. Instead of manually creating and switching between tmux windows for each Claude Code chat, Mux automates the workflow — you can start, name, list, and switch between sessions with simple commands.
- Why it matters: Developers using Claude Code often need to run several independent AI-assisted coding sessions at once (e.g., one for refactoring, one for debugging, one for writing tests). Without Mux, managing those concurrent tmux sessions is tedious; Mux makes it a deliberate, keyboard-friendly tool rather than an ad-hoc mess.