Use python to parse privoxy log in clf format and refer to wot ratings of the site and then dump the data in a sqlite database for statistics generation later.
Cislog is a syslog server that specifically targets Cisco devices and their implementation of the syslog protocol. It consists of a Django web interface and a syslog listener with a database between them.
Postfix Log Parser in Python is a log analysis tool written in python language to get statistic reports and detect anomalous behaviours on a mail server based on Postfix and Cyrus