Ubercart is an open source e-commerce shopping cart package that fully integrates your online store with Drupal, the leading open source content management system. This is a killer combination for anyone looking to build a community around a product, sell access to premium content, offer paid file downloads, and much much more!

Ubercart leverages the advantages of Drupal’s major core and contributed systems, providing your users with shopping cart functionality that integrates with other parts of your company or community website.

Shopping Cart Features

• Configurable product
• Flexible product creation system
• Flexible product attributes system
• Single page checkout
• Automatic account generation
• Simple order processing
• Simple order creation and editing
• Integrated payment system
• Activity logging
• XML import/export allows

Website: http://www.ubercart.org

Demo: http://livetest.ubercart.org/