Selz - Seriously Simple Selling
OpenCart - A free shopping cart system. OpenCart is an open source PHP-based online e-commerce solution.s
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.
Shopio - Shopio is an all-in-one hosted shopping cart solution.
ThriveCart - ThriveCart is a shopping cart platform enabling businesses to boost revenue with high converting cart pages.
Zen Cart - Zen Cart