Azure Web Log 

Azure Web Log analyzer tells you all you want about your web site: What are the most popular pages and files on your site? How many visitors are there and where are they from? What browsers and OS they use? What is your sites traffic?
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LogRover 

LogRover is an advanced web log file analyzer that analyzes log files generated by IIS, Apache and other web servers. LogRover generates comprehensive reports of page hits, sessions, visits, visitors, search engine referals, and session times.
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