Whoisup

Network Monitoring Network Utilities System Monitoring

WhoisUP monitors hosts via ICMP and shows the status in a web page. When a host is down, the script can send mail, syslog message, open a popup message or play a sound. The script uses NMap to send ICMP packets and to save the host status into an XML file. Then, WhoisUP reads the XML and shows the report in a web page with AJAX features; in case of host failure the script can send alarms.

http://code.google.com/p/whoisup/