سلام
Magento is a new professional open-source eCommerce solution offering unprecedented flexibility and control

Magento was designed with the notion that each eCommerce implementation has to be unique since no two businesses are alike. Magento's modular architecture puts the control back in the hands of the online merchant and places no constraints on business processes and flow

دمو
http://www.magentocommerce.com/demo
دانلود
http://www.magentocommerce.com/download