FreeMeter - Monitor network bandwidth (C#.NET 2k/XP+). Desktop and Systray graph.
TCP Optimizer - SpeedGuide.net - The Broadband Guide. Cable modems, DSL, Wireless, Network security. Free speed tweaks and TCP/IP tools for optimizing system performance.
NetSpeedMonitor - NetSpeedMonitor is a lightweight Network Monitoring Toolbar for your Windows Taskbar
Ashampoo Internet Accelerator - Ashampoo Internet Accelerator is an internet connection optimizer and booster that allows you to tune your connection settings.
TrafficMonitor - TrafficMonitor is a network monitoring suspension window software in Windows.
SpeedConnect Internet Accelerator - SpeedConnect Internet Accelerator is software for optimizing your internet connection and boost the speed as well as response.