Urchin
Urchin is a high performance, fully automated website/webserver statistics analysis system that provides critical insight on a website's user activity. Urchin creates three types of reports: The Site Report, The E-mail Report, and The Server Report. These reports are beneficial to anyone interested in both a quality website and a quality experience for the end user. Urchin is available in two versions: Urchin ASAP (the free adware) and Urchin ISP (the ad-free $995).