Squid Log Analysis
You have found the way to Log Analysis on Squid:
Calamaris - by Cord Beermann analyzes logfiles from a number of proxy servers, including Squid. It generates ascii or html-reports. [Perl5]
NLANR Cache Logfile Analysis Scripts - Collection of scripts used to analyze NLANR managed logfiles from large US based web cache servers. [Perl]
prostat - by Claude Gross. Generates statistics from access.log file. [Unix, C]
pwebstats - By Martin Gleeson. Analyses web server logs in Common Log Format, or proxy server logs, producing a variety of statistics. Output in HTML, with graphs. [Perl5]
SARG - By Pedro Lineu Orso. Generates HTML reports on sites accessed and blocked.[C]
Squeezer - by Maciej Kozinski. Gathers statistical information from Squid web cache logs for use in performance optimization. [Perl]
squidARG - Generates reports from access.log files. [Linux/Win binary]
Squid-Log-Analyzer - by Olaf Schubert. Access.log parser. [Perl]
Squidtaild - By Maurice Smiley. Parses squid access logs and report user activity based on user definable filter matches. HTML report output. [Perl5]
Squij - by Mark Nottingham. Generates statistics on how objects in the cache file are accessed. Reports can be used to tune cache refresh settings. [Python]
The Webalizer - By Bradford Barrett. Produces configurable statistics reports in HTML format. [C]
WebLog - By Mark Nottingham, is a set of Python classes for parsing Web logfiles, including one for Squid. [Python] Help build the largest human-edited directory on the web.