Interchange - Web-Based Application Server
- An open source commerce server and application server/component application. It can be used for a variety of applications including online and traditional retail sales, order processing, content management, customer service, reporting and analysis, and digital goods delivery. Latest release is 5.6.0, 2008-05-20.
The osCommerce Homepage, Open Source E-Commerce Solutions
- An open source, GPL'd online shop e-commerce software which features 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.
- This is PHP-based shopping cart software. It is built on a foundation of OScommerce GPL code, and provides an easy-to-setup online store.