Servers Alive build number 543 
URL: http://www.woodstone.nu/salive/

Servers Alive is a network monitor program. It can monitor any Winsock service, ping a host/machine, check if an NT Service/process is running, check the available disk space on a server, check a Netware server, retrieve an URL or check a MS SQL or Oracle database. When any of these is down, it can warn you in various ways, including sending you an email (SMTP) saying what is down, or paging you with a numeric or alphanumeric warning. Servers Alive supports host dependency, such that when one host goes down, all host dependant on that host can also be flagged as down. For ease of use, the program can also be easily interrogated using a TELNET client and/or a web browser.