The Free / Libre / Open Source Web App with the most built-in features
Zen Cart® is a free full-featured self-hosted e-commerce application
Built for enterprise level and highly customized websites
Feature rich insurance quote & buy system for underwriters and brokers
E-Commerce Shopping Cart
Use amazon's website to shop at your favourite local book shop.
A Virtual Table (Cart Table) for developers
WordPress Extension Preisbock Liveshopping