tmux - tmux is a terminal multiplexer: it enables a number of terminals (or windows), each running a...
RealTerm - RealTerm is a terminal program specially designed for capturing, controlling and debugging binary...
byobu - Byobu is a GPLv3 open source text-based window manager and terminal multiplexer.
Tera Term - Tera Term (Pro) is a free software terminal emulator (communication program) for MS-Windows.
mtm - Perhaps the smallest useful terminal multiplexer in the world.
PuTTY - Popular free terminal application. Mostly used as an SSH client.