PuTTY - Popular free terminal application. Mostly used as an SSH client.
Hyper - Extensible, cross-platform terminal built on open web standards.
MobaXterm - Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more
TermBar - Your terminal in your Mac menubar
KiTTY - KiTTY is a fork from version 0.70 of PuTTY. It adds extra features to PuTTY.
Windows Terminal - A new command line interface for Windows machines