Speedtest.net - Test your Internet connection bandwidth to locations around the world with this interactive broadband speed test from Ookla
TrafficMonitor - TrafficMonitor is a network monitoring suspension window software in Windows.
SpeedOf.Me - SpeedOf.Me is an HTML5 Internet speed test. No Flash or Java needed!
NetTraffic - Essential network bandwidth monitor.
Fast.com - Quickly test your internet speed with this fast-loading speed test powered by Netflix.
NetBalancer - NetBalancer is a Windows application for local network traffic control and monitoring.