TrafficMonitor - TrafficMonitor is a network monitoring suspension window software in Windows.
TCPView - TCPView is a Windows program that will show you detailed listings of all TCP and UDP endpoints on...
NetSpeedMonitor - NetSpeedMonitor is a lightweight Network Monitoring Toolbar for your Windows Taskbar
TcpView For Linux - TcpView For Linux. Touch screen friendly design graphical network connections viewer for Linux.
FreeMeter - Monitor network bandwidth (C#.NET 2k/XP+). Desktop and Systray graph.
Angry IP Scanner - Open-source and cross-platform network scanner designed to be fast and simple to use