osCommerce provides the tools to set up a complete online store website for free and to market and securely sell products and services to customers worldwide.
You have complete access to and total control of your online store and data.
It has a growing community of over 260,000 store owners, developers, and service providers who are there to help at every stage of running your online store and business.
Over 7,000 free Add-Ons have been uploaded by the community to use and customize your online store.
Its core functionality is very rich and allows you to manage unlimited products shippable and downloadable with flexible shipping and tax otpions.
Customers may view order history and maintain their accounts.
Integration into an existing site is easy thanks to the flexible template structure.
It allows you to accept payments from Paypal, Authorize.net, iPayment, 2Checkout and more as well as offline payment processing.