osCommerce is the leading Open Source online shop e-commerce solution that is available for free under the GNU General Public License. It features a rich set of 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, license fees, or limitations involved. The goal of the osCommerce project is to continually evolve by attracting a community that supports the ongoing development of the project at its core level and extensively through contributions to provide additional functionality to the already existing rich feature set. The services provided on the network of osCommerce support sites are continually improved to match the growing community the project has attracted in its 5 years of operation. Today, this community consists of over 62,000 store owners, developers, designers, and enthusiasts, and over 2,700 community made contributions that help make the project succeed. osCommerce utilizes Open Source solutions to provide a free and open e-commerce platform, which includes the powerful PHP web scripting language, the stable Apache web server, and the fast MySQL database server. With no special requirements, osCommerce is able to run on any PHP 4.1+ enabled web server running on Linux, Solaris, BSD, Mac OS X, and Microsoft Windows environments.

phpBB is a high powered, fully scalable, and highly customisable open-source bulletin board package. phpBB has a user-friendly interface, simply and straightforward administration panel, and helpful FAQ. It is based on the powerful PHP server language and a choice of MySQL, MS-SQL, PostgreSQL or Access/ODBC database servers which makes phpBB the ideal free community solution for all web sites

StoreFront E-Business Solutions for FrontPage Dreamweaver, UltraDev and QuickBooks - Build affordable, professional and secure e-business web sites with e-commerce shopping cart capability.