Shopping Cart SystemseCommerce Catalog & Shopping Cart Systems
The backbone of any online shopping site is its catalog and shopping cart system.   We use only open source eCommerce solutions, rather than commercial software.   This allows us to utilize robust software which incurs no additional user fees.

osCommerce
osCommerce is the king of open source shopping cart catalog systems.   It is an online shop e-commerce solution that offers a wide range of out-of-the-box features that allows online stores to be set up reasonably quickly.
It is the engine behind thousands of online stores around the world.
osCommerce is easy to set up and maintain, and also makes it possible for store administrators to present their stores to their customers in unique ways.
osCommerce is a feature-packed system which can scale from a few products to thousands of products.  You can find out more at www.oscommerce.com

ZenCart
ZenCart is based on osCommerce but has now developed in a different direction.   It's easy to use, and navigating through your merchandise is simple.   ZenCart provides several "Spotlight" lists in addition to the traditional category to product links, offering excellent presentation flexibility.
Once a product is added to the shopping cart by the customer, secure checkout is a simple three-step process.   After providing the billing information, your customer chooses the shipping method.   There are multiple shipping methods, including real-time internet shipping quotes are built-in.   There is support for lots of payments gateways so you should have no problem taking payments.   You can find out more at www.zencart.com