OpenCart - A free shopping cart system. OpenCart is an open source PHP-based online e-commerce solution.s
X-Cart - Ecommerce software without monthly fees. Start your free ecommerce website with our scalable, PHP shopping cart platform. Download, customize & launch!
3dcart - We provide ecommerce software, web design and inbound marketing services to help online businesses be more successful.
EcWid - Ecwid E-commerce Shopping Cart is Fast and Easy to Use! Works with Wordpress, Drupal, Facebook and Much More! Start Selling Fast Online Now with Ecwid.
WebAssist eCart - Offering Dreamweaver extensions and pre-built PHP web apps to help you build websites.
PrestaShop - Create your online store with PrestaShop's free shopping cart software. Build an ecommerce website for free and start selling online with hundreds of powerful features.