manymux

manymux is a terminal tool that extends tmux functionality across multiple machines you SSH into. It maintains session state on remote boxes and surfaces all active sessions in a single listing, eliminating the need to check each machine separately. When a process completes on any machine, notifications reach your current terminal.

The tool integrates with your existing SSH configuration and relies on sshd for access control, requiring no additional authentication setup. It works alongside tmux rather than replacing it—manymux handles cross-machine session management while tmux handles screen layout. The maker notes it was built with AI coding tools.