tmux is a software application that can be used to multiplex several virtual consoles, allowing a user to access multiple separate terminal sessions inside a single terminal window or remote terminal session.
License: Open Source
Tmux is a powerful and flexible terminal multiplexer favored by developers for its efficiency and customization options. Byobu, on the other hand, builds on tmux's capabilities with a more user-friendly interface and additional features, making it ideal for users who prefer ease of use over complexity.