XOOPS ("eXtensible Object Oriented Portal System") is an award-winning object oriented PHP web application platform for developing small or large community websites, intra company and corporate portals, weblogs and much more. It emphasizes modularity, advanced access control, personalization and international language support.

Zen Cart is an online store management that supports multiple languages and currencies. It's designed to put the dream of running an online business within anyone's reach. While many other shopping cart solutions seem to be complicated programming exercises Zen Cart puts the needs of merchants and shoppers first.

Omeka is a standards-based web-publishing platform for the display of library, museum, archives, and scholarly collections and exhibitions. Its "five-minute setup" makes launching an online exhibition as easy as launching a blog. It is designed for scholars, museums, libraries, archives, and all cultural heritage enthusiasts.

osCommerce provides everything you need to get started in selling physical and digital goods over the internet, from the Catalog frontend that is presented to your customers, to the Administration Tool backend that completely handles your products, customers, orders, and online store data.