Advanced Net Tools (or ANT, as it is affectionately known) is a free utility with a ton of useful network management functionality. The network port scanner can scan a range of IP addresses and ports. Share scanner scans for a list of servers and their shared drives. Trace route counts the number of hops between PC and destination, and identifies the slowest links. ARP, route and adapter configuration tools can be viewed in a Windows GUI. There are ping, DNS and statistical utilities, and lots more.
ANT runs on Windows 98/ME, NT 4 (service pack 4 or later), 2000 or XP. And it's absolutely free from Dreamsys.
If you download and deploy this software, please come back and share your rating. And, as always, if you know of a useful network tool for download, use the e-mail link to let us know.