socat - socat is a relay for bidirectional data transfer between two independent data channels.
NetSpeedMonitor - NetSpeedMonitor is a lightweight Network Monitoring Toolbar for your Windows Taskbar
Simple Port Forwarding - Simple Port Forwarding works with WebPages and not directly with your router.
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?
FreeMeter - Monitor network bandwidth (C#.NET 2k/XP+). Desktop and Systray graph.