Inexpensive Network Monitoring tools for Windows

I'm looking for a free or inexpensive Windows-based network monitoring tool for a small network. I'm familiar with Nagios, but we run a Windows-only shop and I don't want one oddball Linux machine to worry about. What options do I have?

(Note: I read this question, but I'm specifically looking for Windows software)

Solution 1:

Try,

spiceworks

it's a web based 'free' network monitoring solution, i've used it before, it's quite good for some small business scenario.

Solution 2:

I recomend trying the ManageEngine product line. There are full featured free version that cover small networks.

Solution 3:

You could try "The Dude"

It'll auto discover all your devices and monitor them as well.

http://www.mikrotik.com/thedude.php

It's just the name ...