Zen Cart - Zen Cart
OpenCart - A free shopping cart system. OpenCart is an open source PHP-based online e-commerce solution.s
3dcart - We provide ecommerce software, web design and inbound marketing services to help online businesses be more successful.
PayKickstart - PayKickstart is the ultimate shopping cart and affiliate management platform, empowering online Entrepreneurs and digital publishers with the tools to sell their products online.
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.