modemusage generates a graph of modem usage over
time, although it can be modified to monitor usage
of other resources.
Perle dialout allows you to dialout from one of the workstations on an ethernetwork using a Perle 833. The Perle 833 RAS server is a full dial-in server that connects directly to ethernet. The "dial-in" functionality requires no special drivers.
A GTK version of slapt-get.
A mod player library.