From Red Line Software:
Internet Access Monitor for Squid is a software for monitoring the efficiency of the Internet bandwidth usage by your company employees. With Internet Access Monitor you can easily find out which employees load up the bandwidth most heavily, when and what exactly they download, how much time they spend online, and what data transfer volume they generate by their online activity.
What's new in this version:
Version 3.9c uses Forefront TMG's host categories instead of its own host categories, improves reports generation routines, optimizes log files import process, and fixed several issues related to database engine.