NagVis is a visualization addon for the well known network managment system Nagios.

NagVis can be used to visualize Nagios Data, e.g. to display IT processes like a mail system or a network infrastructure.

NagVis 1.4.5 has just been released at 2009, November 27.
Basically it is a maintenance release with minor bugfixes concerning the installer and automap but it also includes two really interesting new features. These changes are backports from the still unstable NagVis 1.5 code. But we wanted to make these features available to the public prior to the first NagVis 1.5 releases.

Project homepage: NagVis | NagVis.org