PuTTY - Popular free terminal application. Mostly used as an SSH client.
xterm - You can download and use MobaXterm Home Edition for free.
YAT - Yet Another Terminal - Engineering, testing and debugging of serial communication.
Kitty terminal - Super fast, GPU and OpenGL based terminal emulator with tiling support
JuiceSSH - The all in one terminal client for Android including SSH, Local Shell, Mosh and Telnet support.
Tabby.sh - Tabby is a free and open source SSH, local and Telnet terminal with everything you'll ever need.