Information:
MARS is a Java application designed to help system administrators monitor the status of Internet servers. It currently monitors SMTP, POP3, IMAP, HTTP, FTP and SSH.
It keeps track of load average, free disk space, and free memory by way of an included Perl server, named SPOTS, which is placed on each monitored machine. It can alert you of problems with alert boxes that are displayed on your desktop or by e-mail or e-mail-based paging systems.