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
Terminator is a user-friendly terminal emulator with advanced features like split panes and SSH integration, making it suitable for users who prefer a graphical interface. In contrast, tmux is a command-line based terminal multiplexer that offers powerful session management and persistence, ideal for users who need to manage multiple terminal sessions efficiently.