MARS is a Java application designed to help system administrators monitor the status of Internet servers they manage. It currently monitors SMTP, POP3, HTTP, and FTP, as well as load average and free disk space (with an included Perl mini-server placed on the monitored machine). It’s designed to sit on your desktop, interrupting you only when there is a problem.
You can download it from the following link: https://packetstormsecurity.com/files/download/13283/mars-1.4pre6.tar.gz
Source: https://packetstormsecurity.com/files/13283/mars-1.4pre6.tar.gz.html