Austad, Jay wrote:

> Ok, Intermapper (http://www.intermapper.com/) is probably one of the 
> most useful network monitoring tools I've ever used.  Except, it only 
> runs on Mac, and there are no plans to port it to another OS.  If you 
> have an extra Mac laying around, you should really grab a demo copy and 
> check it out.


Well there's WhatsUp for windows from

http://www.ipswitch.com/


As well as cheops for linux, but it last I checked it was rather 
unmaintained.

http://cheops-ng.sourceforge.net/