Cmux: Tmux for Claude Code (github.com)

Cmux has been introduced as a lifecycle manager specifically designed for managing parallel sessions of Claude Code, allowing developers to run multiple Claude agents simultaneously within a Git repository. By utilizing Git worktrees, Cmux isolates each agent's working directory, dependencies, and build artifacts while sharing the same Git database. This separation enables developers to efficiently manage concurrent tasks without the confusion and overhead typically associated with conventional setups. The significance of Cmux lies in its streamlined command structure that simplifies the management of worktrees. Users can easily create new worktrees, execute project-specific setup scripts, and switch between tasks with minimal effort. Key features include built-in commands for creating and merging worktrees, as well as an automated setup script generator. With options like tab completion for commands, Cmux enhances productivity and allows developers to focus on coding rather than managing their environments. Overall, Cmux is a remarkable tool that addresses the need for efficient parallel processing in AI/ML workflows, particularly in environments where Claude Code operates best with full ownership of working directories.