NetLimiter - NetLimiter is an ultimate Internet traffic control and monitoring tool designed for Windows.
CacheGuard-OS - CacheGuard is an enterprise grade Web Gateway solution offering Web Security & Optimization in the same box. Price starting at $99 per Year!
NetSpeedMonitor - NetSpeedMonitor is a lightweight Network Monitoring Toolbar for your Windows Taskbar
NetBalancer - NetBalancer is a Windows application for local network traffic control and monitoring.
Wonder Shaper - A bandwidth limiting and traffic prioritization tool for linux.
cFosSpeed - cFosSpeed is a network driver, which attaches itself to existing Internet connections.