cmux is a native macOS terminal with vertical tabs and notifications, designed to enhance productivity for developers using AI coding agents.
Source: README View on GitHub →cmux is gaining attention due to its unique combination of terminal functionality with AI coding agent integration, addressing the need for a more efficient and context-aware coding environment. Its native macOS app status and Swift/AppKit framework choice stand out, offering a performance advantage over Electron-based alternatives.
Source: README, project traitsPanes and tabs are highlighted with blue rings and lights, respectively, when AI coding agents require attention, enhancing visibility and responsiveness.
Source: README FeaturesA dedicated panel displays all pending notifications, allowing users to quickly access and respond to the most recent unread items.
Source: README FeaturesAn integrated browser allows for side-by-side terminal and browser usage, with a scriptable API for automation and interaction with development servers.
Source: README Featurescmux supports both vertical and horizontal tab organization, with a sidebar that displays workspace metadata and notifications, enhancing organization and context awareness.
Source: README FeaturesUsers can create SSH workspaces for remote machines, with browser panes routing through the remote network, and the ability to upload files via scp.
Source: README Featurescmux supports Claude Code's teammate mode, allowing for easy collaboration with teammates without the need for additional tools like tmux.
Source: README Featurescmux can import cookies, history, and sessions from various browsers, ensuring seamless authentication and continuity across browser panes.
Source: README FeaturesUsers can define project-specific actions in `cmux.json`, accessible via the command palette, enhancing customization and workflow efficiency.
Source: README Featurescmux offers a CLI and socket API for automation, including workspace management, pane splitting, keystroke sending, and browser operations.
Source: README Featurescmux is built with Swift and AppKit, providing a fast startup and low memory footprint compared to Electron-based alternatives.
Source: README Featurescmux reads existing Ghostty configurations for themes, fonts, and colors, ensuring a seamless transition for users familiar with Ghostty.
Source: README Featurescmux leverages libghostty for terminal rendering, providing smooth and efficient rendering with GPU acceleration.
Source: README FeaturesThe architecture of cmux is inferred to be modular, with a clear separation of concerns. It likely employs design patterns such as Model-View-Controller (MVC) for the user interface and separation of the terminal and browser functionalities. The code tree indicates a focus on macOS-specific features and integration with AI coding agents.
Source: Code treeinfra: Not enough information. | key_deps: vercel | language: Swift | framework: AppKit
Source: Dependency files, code treecmux is suitable for developers who use AI coding agents and require a more efficient and context-aware coding environment. It is useful for scenarios such as managing multiple AI coding sessions, collaborating with teammates on code, and integrating browser functionality with terminal workspaces.
Source: READMEv0.63.2 (2026-04-06): Fixed coalescing portal sync and sidebar issues. v0.63.1 (2026-03-28): Defer layout follow-up flush to avoid crashes. v0.63.0 (2026-03-28): Fixed bundled Ghostty theme picker helper packaging and main CI issues. v0.62.2 (2026-03-14): Added minimal sidebar detail toggles and current_directory.
Source: GitHub Releasescmux is a promising project for developers seeking to integrate AI coding agents into their workflow with a native macOS terminal. Its unique features and native app status make it a compelling choice for those looking to enhance productivity and efficiency in their coding practices.