Charles Proxy - HTTP proxy / HTTP monitor / Reverse Proxy
MobaXterm - Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more
HTTP Toolkit - Beautiful, cross-platform & open-source tools to debug, test & build with HTTP(S). One-click setup for browsers, servers, Android, CLI tools, scripts and more.
KiTTY - KiTTY is a fork from version 0.70 of PuTTY. It adds extra features to PuTTY.
Weer - A HTTP protocol debugger with Chrome DevTools frontend interface
Persistent SSH - Persistent SSH is SSH tunnel manager for a Windows systems.