W3Perl is a free logfile analyzer.

• Parse WWW / FTP / Squid / CUPS / DHCP / SSH and Mail logfiles
• Doesn't require any code to be inserted into websites
• No dependancy rather than Perl.
• Plugins for city / screensize / PDF...
• Web admin to manage remotely
• Installer available for Linux / Mac and Windows
• HTML / Emails / PDF reports
• Display stats from hours to years, hosts/pages to pages/hosts
• Can produce detailed reports about visitor's path