PHP-scripts (web-interfaces). Billings. SAMS Billing. fprobe-ulog+flow-tools billing. And other. Programs for Microsoft Windows (written in VB.NET)
DansGuardian Log Analyser
MiniStat .net is a simple yet robust hit tracker/ hit counter. It provides statistical information on the users to any asp.net website. MiniStat .net tracks your users hits, unique hits, referring domains, search engine queries, operating system, etc.
visualNets is a log analysis utility that graphically plots network packets over time. Plot source or destination IP or port addresses in a graphical format with color and comments. Allows admins or security analysts to identify subtle security trends.