Screen
guest@6admin.io:~$ ls ~/tags/screen
Byobu: screen with a coat of polish (and a status bar that saves)
The missing little article between Screen and tmux: byobu, Ubuntu's screen-profiles turned standalone project in 2009. An informative status bar, F-key shortcuts and proof that a terminal multiplexer did not need to be a gamble.
Screen: a terminal multiplexer
GNU Screen, the multiplexer that lets multiple text-mode programs run simultaneously from one interface and survive logout.