PuTTY - Popular free terminal application. Mostly used as an SSH client.
Xming - An X Window System Server for Microsoft Windows.
MobaXterm - Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more
iTerm2 - A terminal emulator for macOS that does amazing things.
X410 - X Server for Windows 10
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.