NetSpeedMonitor - NetSpeedMonitor is a lightweight Network Monitoring Toolbar for your Windows Taskbar

netcat - Netcat is a featured networking utility which reads and writes data across network connections...

TrafficMonitor - TrafficMonitor is a network monitoring suspension window software in Windows.

PortMapper - Do you need to map a specific TCP or UDP port on your machine to another port on another machine?

Network Lights - Network Lights is a Windows program, which blinks keyboard LEDs (Light Emitting Diode) indicating outgoing and incoming network packets on network interface.

Komodia Relay - Free open source tool to perform TCP based session relay