In Pictures: 35 open source and free tools to mana...
12. Zen Cart
Designed by a group of shop owners, programmers, designers and consultants, Zen Cart offers a number of features to customize the cart using a template system to design a store. From there, you can configure product categories, sales discounts, and shipping and payment options. Zen Cart also provides community contributed add-ons to improve your Web store. Documentation and the community support forum is available on the Zen Cart website.
In Pictures: 35 open source and free tools to manage your online store