Shopping Carts and Ecommerce Scripts
Zen Cart™
Free, user-friendly, shopping cart system. The software is being developed by group of like-minded shop owners, programmers, designers, and consultants that think e-commerce could be and should be done differently.
osCommerce
an Open Source based online shop e-commerce solution that is available for free under the GNU General Public License. It features a rich set of out-of-the-box online shopping cart functionality that allows store owners to setup, run, and maintain their online stores with minimum effort and with no costs, fees, or limitations involved.
AgoraCart
The powerful "Free" Open Source ecommerce shopping cart software solution that offers a very wide range of "out-of-the-box" features that allow you to setup an online ecommerce solution ranging from a simple template based store to the integration of a complex visual design concept containing all the creative magic of your web designer.
CubeCart
This is an eCommerce script written with PHP & MySQL. With CubeCart you can setup a powerful online store as long as you have hosting supporting PHP and one MySQL database.