WhoisUP monitors hosts via ICMP and shows the status in a webpage. When a host is down, it can send mail, write a syslog message, open a popup message, or play a sound. It uses Nmap to check hosts continuously.
A game which looks like a Rubik's Cube, but is a slider, not a twister.
A telephony engine for PBX, IVR, and gateways.