I use the pattern recognition and machine learning toolboxes in Matlab considerably, mainly for my research. These are very useful, as they contain modules for running several machine learning/pattern recognition algorithms. These can be easily adapted to any platform, including mobile devices, and saves a lot of time that would otherwise be spent on coding and programming. Very user-friendly and greatly loved by student researchers as well.

The package is designed not only to be easily read, but also to be easily used to facilitate ML research. I've used several in my paper.