PRTG Traffic Grapher is an easy to use Windows software for monitoring and classifying bandwidth usage. It provides system administrators with live readings and long-term usage trends for their network devices. The most common usage is bandwidth management, but you can also monitor many other aspects of your network like memory and CPU utilizations.

Program Information Category: Tools and Utilities Type: Free Version: 6.0.6.675/676 Size: 10MB Works on: Windows Product page: here