osCmax is based on the ecommerce application osCommerce 2.2RC2a and is an extension of that application.
It is a marked improvement over standard osCommerce in many ways. osCmax is packed with the most requested features that are missing from standard osCommerce. In addition, osCmax has many features and enhancements that are not available in any mods currently released for osCommerce.
Simply fork this project, add your changes and submit a pull request