TSplus Remote Desktop Software - TSplus provides fast and feature-rich Remote Desktop Software for Linux, Windows, and Mac.
PuTTY - Popular free terminal application. Mostly used as an SSH client.
Iperius Remote - Iperius Remote is a high-performance and feature-rich remote desktop solution designed to be used for remote access, remote support, and WFH.
MobaXterm - Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more
Dameware Remote Everywhere - SolarWinds Dameware Remote Everywhere (DRE) is designed as an affordable and powerful cloud-based remote support tool. It doesn't just connect you to machines, it helps you solve your end users problems fast.
iTerm2 - A terminal emulator for macOS that does amazing things.