cmux
A native Mac workspace for terminals, browsers and agent notifications; repos remain folders.
Technical Profile & Specs
verified 2026-08-10
- Cost
- $0 / forever (Open Source)
- License
- GPL-3.0+
- Hosting Model
- Local (on your machine)
- Platforms
- desktopone-click install
- Installation
- Drag the signed macOS app from its DMG into Applications, or install the Homebrew cask
- Operational Setup
- macOS only; each coding-agent CLI and its account or API credentials must be installed separately
- Where Your Data Lives
- Configuration, workspace state, and terminal scrollback live on the Mac; the optional iOS companion connects over the user's local network or Tailscale rather than a vendor relay
- The Catch / Trade-off
- cmux is an excellent terminal workspace, but it does not provide Uncircle’s declarative per-project stack, one-click parallel startup, process health view, and automatic restart.
Replaces 1 paid app
cmux FAQ
Common questions
Is cmux free and open source?+
cmux is an open-source tool licensed under GPL-3.0+ that runs on local. A native Mac workspace for terminals, browsers and agent notifications; repos remain folders.
What paid software does cmux replace?+
cmux serves as a free replacement for 1 paid SaaS application: Uncircle.
How do you install and set up cmux?+
Installation: Drag the signed macOS app from its DMG into Applications, or install the Homebrew cask. Setup notes: macOS only; each coding-agent CLI and its account or API credentials must be installed separately
What is the catch or trade-off with cmux?+
cmux is an excellent terminal workspace, but it does not provide Uncircle’s declarative per-project stack, one-click parallel startup, process health view, and automatic restart.