PuTTY - Popular free terminal application. Mostly used as an SSH client.
MobaXterm - Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more
KiTTY - KiTTY is a fork from version 0.70 of PuTTY. It adds extra features to PuTTY.
iTerm2 - A terminal emulator for macOS that does amazing things.
ZOC Terminal - ZOC is a professional SSH/telnet client and terminal emulator. With its impressive list of emulations and features, it is a snap to access hosts and mainframes via secure shell, telnet, serial cable, modem/isdn and other methods of communication.
GNOME Terminal - GNOME Terminal is a terminal emulator for GNOME desktop.