Relax by Matti Tukiainen, is a free WWW logfile
referring URL and search engine keyword analysis tool written i Perl.
It recognizes numerous search engines and organizes popular keywords
and URLs used to get to your site.
RefStats is a small perl script that scans the refered_log
generated by NCSA httpd 1.4 and produces a list, sorted by local page,
summarizing what referring URLs were reported by browsers, with a count
of the number of times each referring URL was reported.
Chuck
Musciano on Referer Log Analysis Tools.
Some Access analyzer packages
include the capability to analyze referer logs as well. E.g.MKStats and Analog are supposed to do so.
