Zen Cart - Zen Cart
Charitable - A WordPress donation plugin that gives you full control over your fundraising experience.
OpenCart - A free shopping cart system. OpenCart is an open source PHP-based online e-commerce solution.s
Give - A WordPress plugin for easily collecting donations
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.
FreeFunder - Free crowdfunding platform with no platform fee and donates to your fundraiser based on shares!