FreeMat is an interpreted, matrix-oriented development environment for engineering and scientific applications, similar to the commercial package MATLAB. FreeMat provides visualization, image manipulation, and plotting as well as parallel programming.

FreeMat source code, issues and downloads are located on Sourceforge (only the WIKI and the discussion groups are located here yet).

You can also find here:

• Community Tutorials for FreeMat
• A Few Articles about FreeMat
• Resources if you want to help developing FreeMat itself

The actual stable release is FreeMat 4.0.