PuTTY - Popular free terminal application. Mostly used as an SSH client.
Hyper - Extensible, cross-platform terminal built on open web standards.
ConEmu - ConEmu-Maximus5 is a full-featured local terminal for Windows devs, admins and users. Get better console window with tabs, splits, Quake style, copy+paste, DosBox and PuTTY integration, and much more.
Terminal on FB Messenger - Take control of your terminal through Facebook Messenger
Gnome Terminator - Terminator is one of the most useful and dynamic terminal emulators for Unix based operating systems.
Bidbar - Save and run Terminal commands from the Mac menu bar