I have read about the alternative tools in place of "Google Analytic", does anyone else head of it, or use it earlier, if yes then please share your experience, and if no, then join the query, We will find the answer?
Try reinvigorate(dot)net it has a 14 day free trial. Compare the results with Google Analytics, in my opinion they won't be too off - best case scenario they will match.
Google analytics is the only free Traffic/Analysis Tool, other services are paid like Omniture.
There is a tool called Joomla watch, I have used it for Joomla based websites and I don't think it will be usable for other CMS based websites but it was a good tool for keeping track of users on your website.