The Webalizer is a web server log file analysis program which produces
usage statistics in HTML format for viewing with a browser. The results
are presented in both columnar and graphical format, which facilitates
interpretation. Yearly, monthly, daily and hourly usage statistics are
presented, along with the ability to display usage by site, URL, referrer,
user agent (browser) and country (user agent and referrer are only
available if your web server procduces Combined log format files).
The Webalizer supports CLF (common log format) log files, as well as
Combined log formats as defined by NCSA and others, and variations
of these which it attempts to handle intelligently.