ROOT is an object-oriented program and library developed by CERN. It was originally designed for particle physics data analysis and contains several features specific to this field, but it is also used in other applications such as astronomy and data mining.
It provides all the functionalities needed to deal with big data processing, statistical analysis, visualisation and storage.
Rene Brun and Fons Rademakers,
ROOT - An Object Oriented Data Analysis Framework,
Proceedings AIHENP'96 Workshop, Lausanne, Sep. 1996, Nucl. Inst. & Meth. in Phys. Res. A 389 (1997) 81-86.
I noted this with interest as I was looking for something else relating to statistics. I don't think I'll be taking this language any further at present as I've other things to learn.
Keywords: root cern software