AWStats is a great open-source stats analyzation program.
In the process of setting up a replacement webserver at VSU I was investigating the replacement of analog, another nice open-source stats program.
The problem with analog is that the people requesting stats were confused by the technical output. These people aren’t computer folks, they just want to know who or what or when the pages they maintain are being visited.
The default setup of AWStats is fairly easy to accomplish, but if you want to generate separated stats on individual directories off the web root, then it takes a little know how.