cmux
by manaflow-ai
cmux is a macOS terminal app built on Ghostty, with vertical tabs, split panes and an in-app browser. It shows notifications when AI coding agents such as Claude Code or Codex are waiting for you, so you can run several at once.
- Stars
- 28.6k +21 a day
- Licence
- Unclear
- Runs on
- Your computer
- Setup
- Easy
- Language
- Swift
- Age
- 274 days
What you can do with it
- Run multiple Claude Code or Codex sessions side by side and see which one needs attention from a highlighted pane or tab
- Split a browser next to your terminal so an agent can test your dev server directly
- Open a workspace on a remote machine with one SSH command and script workspaces through the command line
Make money with it
A freelance developer could use it to run several AI agents in parallel and take on more client coding work in the same time.
An idea, not financial advice. Check the licence before charging for anything built on it.
Ways a business could use it
- A freelance developer can keep several client projects and coding agents open at once and spot quickly when one is stuck, saving time.
- A small software team can set up shared project commands in a config file so everyone launches the same workspace layout.
Can you use it commercially?
No standard licence detected. Read the licence before using it commercially.
Not legal advice. Read the project's licence file before building a product on it.
Getting it running
Download the .dmg and drag it to Applications, or install with Homebrew using "brew install --cask cmux".
Follow the official instructions in the project README.
Things to check
- macOS only
- Licence is not clearly identified in the repository data (README says GPL)
- The AI agents it supports usually need their own paid subscriptions or API keys
Checked 29 Oct 2026. Summary drafted by AI from the project's README.
