PrestaShop
PrestaShop is an open source e-commerce shopping cart application. Initially released in 2007, PrestaShop is currently one of the most used e-commerce applications powering more than 100,000 stores.
The PrestaShop e-Commerce Solution was built to take advantage of essential Web 2.0 innovations such as dynamic AJAX-powered features and next-generation ergonomy. PrestaShop guides users through your product catalog intelligently and effortlessly, turning intrigued visitors into paying customers.
-PrestaShop developer