OpenCart - A free shopping cart system. OpenCart is an open source PHP-based online e-commerce solution.s
Sellbery - Easily automate product feeds from Shopify, Magento to Amazon, eBay and other marketplaces. Fully utilize the most profitable eCommerce channels and increase sales.
3dcart - We provide ecommerce software, web design and inbound marketing services to help online businesses be more successful.
Enspire Commerce - Omni-channel ecommerce management solution
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.
OrderDynamics - Order management & digital commerce for retailers & brands