Gwstat: Graphics add-on for wwwstat reports. May no longer be being supported.
Web Analytics Demystified: Includes free book chapters about web analytics, as well as a blog about web analysis.
Weblog Parse: Not a log analysis package by itself, rather this is a fast tool for building such packages.
WiredMinds: Software and services company in the area of Web site analytic and the controlling of web-based applications.
WUM: A Web Utilization Miner: WUM is a sequence miner. Its primary purpose is to analyze the navigational behaviour of users in a web site, but it is appropriate for sequential pattern discovery in any type of log. It discovers patterns comprised of not necessarily adjacent events and satisfying user-specific criteria.