cmux
About cmux
cmux is an open source terminal application for macOS, built on Ghostty with enhancements for multitasking and AI coding workflows. It provides vertical tabs, split panes, and notification systems to help developers manage multiple coding agent sessions.
The terminal includes an integrated browser with scripting capabilities, SSH workspace support, and compatibility with AI coding tools like Claude Code Teams. It is designed as a native macOS application for performance, using Swift and AppKit rather than Electron.
Key features
- Notification rings and panel to track agent activity across tabs
- Integrated browser with scriptable API for automation
- Vertical and horizontal tab layouts with workspace metadata
- SSH workspace creation with file transfer capabilities
- Claude Code Teams integration with native split management
- Browser session import from multiple browsers
- Programmable CLI and socket API for automation
- GPU-accelerated terminal rendering
Download v0.64.19
Jul 14, 2026macOSmacOS
Frequently asked questions
- Is cmux free?
- Yes. cmux is free and open-source software, distributed under the NOASSERTION license.
- Which platforms does cmux support?
- cmux provides downloads for macOS.
- What is the latest version of cmux?
- The latest version is v0.64.19, released on Jul 14, 2026.
- What platforms does cmux support?
- cmux is currently available only for macOS as a native application.
- How do I install cmux?
- cmux can be installed via downloadable DMG file or through Homebrew with 'brew install --cask cmux'.
- Is cmux free to use?
- Yes, cmux is open source and licensed under GPL.
- Does cmux work with existing terminal configurations?
- cmux reads existing Ghostty configuration files for themes, fonts, and colors.
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