Web analysis tools can be used to scrutinize various aspects of your site, in order to gather data for market research, and help to focus you on specific areas of the site.
These tools might show you anything from traffic to age demographic, and are invaluable as a part of any Admin’s arsenal, especially since there are so many revolutionary ways nowadays to measure your site statistics, besides the traditional traffic numbers. The sites listed in this article are both free and paid-for, however offer a variety of different tools, some standard, some proprietary.