TermFu allows you to have access to all those long terminal commands that are so hard to remember. It's a client for the commandlinefu.com Web site where other users share those amazing "one-liners"
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.