Network Inventory

Hey guys! I don't know why I didn't think of asking this fine forum earlier, but I'm looking for an asset tracker/network inventory software. The best one I found so far is called Asset Tracker for Network by Alchemy Labs (http://www.alchemy-lab.com/products/atn/). The only problem is that its pretty expensive. I only need to scan 3 networks. I downloaded the trial version, but it has a 3 computer limit. I have, like I said, about 3 or 4 networks to scan just once - each network having about 15-20 computers. I don't mind spending money, but that is too much for just 3 networks! Is there something out there like Asset Tracker that is about $20? Or preferably free? I looked a little, but couldnt find anything. Thanks guys!

 

I don't know of any that scan your network (although, I never really looked), but there are MANY free asset trackers on Sourceforge