NetLimiter - NetLimiter is an ultimate Internet traffic control and monitoring tool designed for Windows.
TCP Optimizer - SpeedGuide.net - The Broadband Guide. Cable modems, DSL, Wireless, Network security. Free speed tweaks and TCP/IP tools for optimizing system performance.
NetBalancer - NetBalancer is a Windows application for local network traffic control and monitoring.
Throttled Pro - Throttled Pro optimizes your internet connection and provides QoS (Quality of Service) to Mac OS X.
Bandwidth Manager - Bandwidth management, bandwidth limiting and traffic shaping software for Windows
Ashampoo Internet Accelerator - Ashampoo Internet Accelerator is an internet connection optimizer and booster that allows you to tune your connection settings.