Onlinecalc summarizes your online time, transfer
volume, and number of connections made to your ISP
with pppd. It allows you to print out statistics
concerning different date and time ranges. A CGI
version of onlinecalc is also available.
Netfilter2html is a script developed in AWK for filtering netfilter/iptables logs to generate HTML reports.
An offline application for Wikipedia (and other wikis).
Software to decapsulate traffic encapsulated within IPIP, GRE, and ESP protocols.