tilda terminal emulator - Tilda is a GTK+ terminal emulator.
tmux - tmux is a terminal multiplexer: it enables a number of terminals (or windows), each running a...
Alacritty - Alacritty is a blazing fast, GPU accelerated terminal emulator.
byobu - Byobu is a GPLv3 open source text-based window manager and terminal multiplexer.
Xfce4 terminal - Productivity
mtm - Perhaps the smallest useful terminal multiplexer in the world.