piwik
piwik

Piwik is an open source downloadable web analytics software which aims to provide an alternative to Google Analytics that you can run on your own server. The project was previously known as phpMyVisites and is currently maintained by OpenX, the company behind the free OpenX ad server. It provides you with detailed reports on your website visitors: the search engines and keywords they used, the language they speak, your popular pages … and much more.

Piwik could be integrated with your website as JavaScript code that you insert manually or using one of the existing plugins. With Piwik you will have your own data, you can build your own custom plugins, and you will have a fully customizable interface where you can drag and drop the widgets you want to display and create a report especially tailored to you. The solution allow you also to embed your stats in your website, that’s great if you want to share live stats about your visitors for advertisers. Require PHP 5.1+ and Mysql, the installation process is automatic and takes less than 5 minutes. Released under a GPL license.

More information at http://piwik.org/