PuTTY - Popular free terminal application. Mostly used as an SSH client.
tilda terminal emulator - Tilda is a GTK+ terminal emulator.
iTerm2 - A terminal emulator for macOS that does amazing things.
Alacritty - Alacritty is a blazing fast, GPU accelerated terminal emulator.
MobaXterm - Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more
Xfce4 terminal - Productivity