Oscommerce is the leading open source online e-commerce solution that is available free of charge. It features a rich set of out-of-the-box online shopping cart functionality that permits shop entrepreneurs to setup, run, and maintain on-line shops with minimal effort and without any expenses, fees, or limitations involved. It can administer many currencies, support a wide range of languages and work with many payment programs. New features and functions are added all the time because there's a community of users that collectively and individually operate to improve this evolving program. It's a powerful piece of software that can hook up with most payment gateways and accomplish just about anything you need in an ecommerce cart.