tmux - tmux is a terminal multiplexer: it enables a number of terminals (or windows), each running a...
byobu - Byobu is a GPLv3 open source text-based window manager and terminal multiplexer.
mtm - Perhaps the smallest useful terminal multiplexer in the world.
Zellij - A terminal workspace with batteries included
Abduco + Dvtm - Abduco + Dvtm reliably brings sessions and virtual terminal management programs together to be a more effective functional approach.
Wemux - wemux - Multi-User Tmux Made Easy