MathCode is a high-performance code-generation system for a subset of Mathematica. Its key features include the following.
High-speed numeric computation
Generation of stand-alone C++ code, optionally connected via MathLink to Mathematica with no run-time license required
Automatic linking of existing C, C++, and Fortran77 code into Mathematica
Extended matrix handling
MathCode is developed and supported by MathCore AB and distributed by Wolfram Research, Inc.