WebLog
WebLog is a comprehensive access log analysis tool. It allows you to keep track of activity on your site by month, week, day and hour, to monitor total hits, bytes transferred and page views, and to keep track of your most popular pages. It can also print out secondary reports to track "user sessions," showing the paths taken through your site by your visitors and giving you a rough idea of how long they spent looking at your pages, and to provide you with information on referring sites, the search engine keywords which brought your visitors and the agents and platforms they used while visiting.