FreeMat  4.2-Source
About: FreeMat is a free environment for rapid engineering and scientific prototyping and data processing (similar to MATLAB and GNU Octave). It provides visualization, image manipulation, and plotting as well as parallel programming.
  Fossies Dox: FreeMat-4.2-Source.tar.gz  ("inofficial" and yet experimental doxygen-generated source code documentation)  

FreeMat Documentation