Piwik is a Free Software Web analytics application. If you run a website, it is what you use when you do not want to use Google Analytics or any other third party solution.
With Piwik, you download and install it on your own server, which means that you have complete control of the application. The stable edition is at version 1.9.2. Development of the next major version, Piwik 2.0, has already started.
To read more about Piwki’s crowdfunding drive, go here.