In July of 2003, DoWeDo-IT started to develop several e-commerce sites. These sites were tailored for small to medium sized portuguese companies. The solution choosen as base for the development was and still is the well-known and recognized fully featured osCommerce. The initial release was built on top of osCommerce 2.2 MileStone 1, and several features and fixes have since then being added to the code. The development team needed a stable and feature-rich plataform to use as a steady foundation for the new online shops. osCommerce uses MySQL as the database engine backend and PHP with CSS as the scripting engine frontend.
For more information, please visit the official osCommerce site and the official osCommerce Forums.