FreeMeter - Monitor network bandwidth (C#.NET 2k/XP+). Desktop and Systray graph.
WMI Tools - WMI Tools is a free toolkit from AdRem Software designed to access WMI information.
TrafficMonitor - TrafficMonitor is a network monitoring suspension window software in Windows.
WMI Explorer - WMI Explorer is a utility intended to provide the ability to browse and view WMI...
NetSpeedMonitor - NetSpeedMonitor is a lightweight Network Monitoring Toolbar for your Windows Taskbar
Goverlan Free WMI Explorer - WMIX makes WMI technology accessible to sysadmins and infrastructure engineers.