Piwik - piwik.org

Description 
===========	
Piwik is an open source web analytics software. 
It gives interesting reports on your website visitors, your popular pages, 
the search engines keywords they used, the language they speak… and so much more.

Piwik aims to be an open source alternative to Google Analytics.

Mission statement
=================
« To create, as a community, the leading international open source 
  web analytics application, providing access to all functionality 
  through open components and open APIs. » 

License
=======
Piwik is released under the GPL v3 license, see misc/license.txt 

Requirements
============
- php 5.1.3 or greater
- mysql 4.1 or greater, mysqli or PDO library must be enabled
- OS / server independant
See http://piwik.org/docs/requirements/

Install 
=======
- Upload piwik in your webserver 
- Point your browser to the directory
- Follow the steps
- Add the given javascript code to your pages
See http://piwik.org/docs/installation/

Changelog
=========
See http://piwik.org/changelog/

API
===
All the data is available via APIs for example to get todays keywords in XML
?module=API&method=Referers.getKeywords&idSite=1&period=month&date=today&format=xml

or yesterday visits information in JSON
?module=API&method=VisitsSummary.get&idSite=1&period=month&date=yesterday&format=json

Check the full documentation on http://dev.piwik.org/trac/wiki/API/Reference

Generate fake data
==================
To generate thousands of fake visits to get some data to play with, 
you can see the script /misc/generateVisits.php
you can edit the number of visits to generate, the number of actions per visit, and the days

Contact
=======
http://piwik.org
hello@piwik.org