GAppProxy - GAppProxy is an open source HTTP Proxy software runs on Google App Engine.
PuTTY - Popular free terminal application. Mostly used as an SSH client.
GoAgent - GoAgent is a gae proxy forked from gappproxy/wallproxy.
MobaXterm - Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more
XX-Net - XX-Net is GoAgent with improvements.
iTerm2 - A terminal emulator for macOS that does amazing things.