Plain-AyI
← All projects
Coding assistants

cmux

A Mac terminal app for juggling many AI coding agents at once, with alerts when one needs you.

Fast-rising

What it does

cmux is a terminal app for Mac (a terminal is the text window programmers use to run commands). It's built for people who run several AI coding agents, such as Claude Code or Codex, side by side.

Its sidebar shows tabs for each workspace with useful details, and panes light up when an agent needs your attention. A notification panel gathers all the alerts in one place.

It also has a built-in web browser that agents can control, plus support for remote machines and custom shortcuts. It's a native Mac app built on Ghostty, another terminal program, and can use your existing Ghostty settings.

Who it's for

Programmers who run several AI coding agents in parallel on a Mac.

Can I use it without coding?

Developers only. Installs like a normal Mac app, but it is a terminal for people who work with code. New to this? Start here.

Can I run it?

Cost
FreeNothing to pay or sign up for.
Runs on
Mac
API key
Not needed

Try it

  1. Download the cmux app for Mac, open the file and drag cmux to your Applications folder.
Official download page

Using Claude Code, Cursor or another AI coding assistant? Paste the prompt and it will walk you through the setup.New to this?

Before you install

  • Only download from the official GitHub page or the official download page above. Copies with similar names exist for many popular projects.
  • No standard license listed. Check the GitHub page before using it for business.
  • More on staying safe

Where people are talking about it