Description: PHP script for realtime monitoring of the current server incoming and outgoing traffic. Can be used to trigger special events on too high or low bandwidth consumption. Works only on Linux servers.
I like bwm-ng: http://www.gropp.org/?id=projects&sub=bwm-ng You can install it with yum install bwm-ng if you've configured RPMForge (Red Hat/Fedora/CentOS). It's a command-line utility.