RePEc contains working papers, references to published articles, books, and chapters as well as software components. MPRA only handles working papers and books. If you wish to make software in any commonly used language available through RePEc, please contact the maintainers of one of RePEc's software series, listed at http://ideas.repec.org/SoftwareSeries.html.
The Statistical Software Components (Boston College) archive is appropriate for any statistical software. The QM&RBC Archive is appropriate for economic modelling software. Any software components entered in these archives may be located by RePEc services' search tools, and included in the author's CV in the RePEc Author System.