The top 5 open source shopping cart software e-commerce CMS Componenets.
1. Virtuemart is a shopping cart component for Joomla. Joomla is powerful CMS platform Virtuemart has grown into the most popular and powerful shopping cart extension.
2. Magento is an open source eCommerce, offers professional features, flexibility and control over the look, content, and functionality of the online shop.
3. Prestashop is a powerful shopping cart solution. It is an open source platform, which means you pay no fee and can modify the tool to suit your needs.
4. osCommerce Online Merchant v2.3 is a online store solution that contains both a catalog frontend and an administration tool backend which can be easily installed and configured through a web-based installation procedure.
5. WooCommerce is an extremely solid eCommerce plugin for WordPress. It has many standard features and futher commercial available extensions.
We use Virtuemart and WooCommerce shopping cart CMS