Creloaded is another most popular open source web store management system for building web store to sell products. I know Creloaded Ins and Out Customization with Theming and Module development!
Joomla is a open source content management system (CMS) for publishing content or building content based website or web application. I know Joomla as well with it’s Theme, Module, Plugins and Component Developments.
Zen Cart is another open source fee to use online store management system. It is PHP-based, using a MySQL database and HTML components. I know zen cart coding as well for Theming and Module development.
Magento is another most popular open source web store management system for building online store to sell products. I know Magento Customization with Theming, Skinning, Interface and Module development!
CakePHP is an open source php web application framework. I know CakePHP well. I know how to write CakePHP code for multitheme, multi language, ACL.