grafist

Grafist is a bandwidth utilization viewer. It gets the bandwidth utilization information for network interfaces from the /proc/net/dev file in 15-second periods, and stores it in four data files (daily, weekly, monthly, and yearly). When a request is sent to index.php, it executes four programs to create graphics (using the GD library) and a summary for each file. Grafist provides localization support for 24 languages.

Homepage:
http://projects.comu.edu.tr/grafist/
Tar/GZ:
ftp://ftp.comu.edu.tr/[..]/linux/prog/grafist/grafist-2.0.0.tar.gz