Groundwork OpenSource (Score 1)

Groundwork is a great unification of Nagios and other tools that provides the missing configuration interface Nagios lacks.

http://www.groundworkopensource.com/products/os-ov erview.html

There's a VMware appliance available if you want to take it for a quick spin around the block.

http://sourceforge.net/project/showfiles.php?group _id=160654&package_id=222764