Analog
http://www.analog.cx
Web server logfile Software
Win/Unix/Mac Analog is highly scalable, ultra-fast, easily configured to report in over 30 languages, and it works on any operating system. Analog is purportedly the most popular measurement application in the world.
AWStats
http://awstats.sourceforge.net
Web server logfiles, FTP logs, mail logs Software
Win/Unix/Mac An open source Perl-based measurement tool, AWStats is a very flexible tool for technically minded folks.
WWWStat
http://ftp.ics.uci.edu/pub/websoft/wwwstat/
Web server logfiles Software
Unix-based systems, Relatively simple and easily modified Perl-based logfile parser for Unix systems and common logfile (CLF) format web servers.
Log Parser 2.0
http://www.microsoft.com/technet/scriptcenter/tools/logparser/default.mspx
Web server logfiles Software
Windows Microsoft tool that allows SQL-like queries against Microsoft Internet Information Server (IIS) log files.
FunnelWeb
http://www.funnelwebcentral.com
Web server log files Software
Win/Unix/Mac Surprisingly well-supported by moderately active bulletin boards maintained by a regular software com
