smux

A native terminal multiplexer for macOS built for AI agents.

Run agents in parallel across split terminals and get notified when they finish.

Features

• Split terminals, run agents in parallel — Split horizontally or vertically and manage everything at once.
• Get notified when agents need you — Turn on watch mode for any terminal. When an agent finishes its task, you get notified (with ring, sound or native push).
• Workspaces — Group related terminals into workspaces and switch between them.
• Keyboard-driven — Split, navigate, zoom, close, switch — everything is one shortcut away.
• Session persistence — Layout, terminals, and everything are saved and restored automatically.
• Native and fast — Written in Swift for macOS.

Install

Requires macOS 14 or later. Free and open source.

Download the latest release

<img width="1374" height="1019" alt="Screenshot 2026-03-06 at 12 15 49" src="https://github.com/user-attachments/assets/ab2322c8-1d00-4e45-95f9-bf7b64a34109" />

Keyboard Shortcuts

| Action | Shortcut | |---|---| | Split right | Cmd + Right | | Split down | Cmd + Down | | Close | Cmd + W | | Zoom | Cmd + Shift + Enter | | Toggle notifications (off/on/silent) | Cmd + B | | Navigate | Option + Arrow keys | | Switch workspace | Option + Shift + Arrow keys | | New workspace | Cmd + Shift + T | | Show all shortcuts | Cmd + / |

Build from source

Open smux.xcodeproj in Xcode 15+.

License

MIT