Charles Proxy - HTTP proxy / HTTP monitor / Reverse Proxy
NetSpeedMonitor - NetSpeedMonitor is a lightweight Network Monitoring Toolbar for your Windows Taskbar
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.
TrafficMonitor - TrafficMonitor is a network monitoring suspension window software in Windows.
Weer - A HTTP protocol debugger with Chrome DevTools frontend interface
Network Lights - Network Lights is a Windows program, which blinks keyboard LEDs (Light Emitting Diode) indicating outgoing and incoming network packets on network interface.