PrestaShop is an e-commerce solution which is free for the basic kernel and open source. It supports payment gateways such as Google Checkout, PayPal and Payments Pro via API. Further payment modules are offered commercially.
PrestaShop is available under the Open Software License and officially launched in August 2007 for small to medium-sized businesses. The software, which is based on the Smarty template engine, is currently used by 100,000 shops worldwide. PrestaShop was named the Best Open Source E-Commerce Application in the Packt 2010 Open Source Awards and the Best Open Source Business Application in the 2011 Open Source Awards.