PuTTY - Popular free terminal application. Mostly used as an SSH client.
Throttled Pro - Throttled Pro optimizes your internet connection and provides QoS (Quality of Service) to Mac OS X.
MobaXterm - Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more
Ashampoo Internet Accelerator - Ashampoo Internet Accelerator is an internet connection optimizer and booster that allows you to tune your connection settings.
iTerm2 - A terminal emulator for macOS that does amazing things.
TCPView - TCPView is a Windows program that will show you detailed listings of all TCP and UDP endpoints on...