Freeware/shareware sw similar to Solarwinds IP Network Browser?

Hello,

I like the Solarwinds IP Network Browser application (link below), but
I don't want to pay for the $145 standard solarwinds package to get
it. Does anyone know of similar software (just the IP Network
Browser) for which I can get at less cost?

I'm hoping to find something that can run across Windows, Linux, and
possibly Mac OS X and other unixes. However, I'll get by with just a
Windows version.

http://www.solarwinds.net/Tools/Netw...rk_Browser_SE/

-Matt
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