A collection of command-line tools for researchers in machine learning, data mining, and related fields. All of the functionality is also provided in a clean C++ class library. Demo apps are included to show how to use the class library.

Waffles seeks to be the world’s most comprehensive collection of command-line tools for machine learning and data mining. Our native tools have minimal dependencies (no interpreter, VM, or runtime environment is necessary), and build cross-platform. If you have a useful data mining tool that meets these criteria, we want it in Waffles.
http://waffles.sourceforge.net/

Geocommit allows you to attach geolocation information to your commits for later analysis.

Everything happens on your machine to protect your privacy, you need to push the geo annotations explicitly if you want to share them with others.
http://www.geocommit.com/