JAMESP  This is a cool little widget if you need access to Internet routing information or just want to find out who someone's ISP is, etc. It also shows you the current size of the Internet routing table.  
(Version 1.2)

JAMESP  This program is painful. Not only is it a Java app, making it slow and in some cases ugly, the user interface is designed for a 4-year-old instead of a network professional. The important statistics are hard to get to or in many cases, completely unavailable.

If you're looking for a program help find network problems and show you real network information to help you resolve problems, don't buy this.

If you're looking for a program that will show a pretty picture of a map, a guess as to where IPs are located, and just barely scratch the surface of a network, this may be for you.   
(Version 11b)

JAMESP  Path Analyzer Pro is awesome. Besides being just a cool program to use, it actually helps solves problems. When we experienced a network issue and were arguing with our ISP / network provider about where the problem was, Path Analyzer Pro helped us determine where in the line things were messing up. Then, by exporting the report and charts as images and droppping them into an e-mail to our providers (all it takes is one click in the app), it made it easy for even a non-network-person to see where the problems were and how bad they were. This program has my vote for a must-have network utility.  
(Version 2.1)