OpenCart – Your Own Complete, Stand-Alone eCommerce and Shopping Cart Platform.
An Interview with Daniel Kerr, Owner, OpenCart
When I first hear “shopping cart” I tend to think about an add-on to an existing web site to handle online purchases. But that is not the case with OpenCart, which is a comprehensive eCommerce platform capable of handling large product catalogs. It is also open source and free software, so you can modify it to meet your specific needs. Although, the truth is, you made not have to make many changes to the code because there are over 14,000 extensions available to add all types of functionality to the base product.