Piwik is a open source real-time web analytics program and an open-source alternative to Google Analytics.Piwik was written in PHP and MySQL, and like Google Analytics needs the webmaster to embed a JavaScript tracking code into his website.

Features of Piwik:
- Real time web analytics reports
- Your web analytics data
- Modern, easy to use user interface
- Piwik features are built inside plugins
- Vibrant international open community of more than 50,000 active users
- Plugins are available for other platforms like WordPress, Drupal, TYPOlight and more.

What's New in This Version:
- The ability to see web analytics data overlaid on the website you’re tracking and not just in the Piwik dashboard (via the new Overlay plugin).
- The ability to take and save notes for different days, so you will better understand why your data looks the way it does (via the new Annotations plugin).
- The ability to automatically update your GeoIP databases with the new GeoIP Auto-Updater.