ZenCart is an open source online store management system. It is PHP-based, using a MySQL database and HTML components. Providing support for many languages and currencies, it is available for free.
CMS is a free, open source content management system for publishing content on the world wide web and intranets. CMS includes features such as page caching to improve performance.
e107 is a content management software that uses PHP and MySQL. It is feature rich and hence provides plenty of options and tools.
CodeIgniter is a powerful PHP framework with a small footprint, built for those who required a simple, yet elegant toolkit to build fully-featured web applications.
WordPress is now a full-fledged content management system with a lot of supporting plugins and it also continues to be a powerful blogging tool. It uses the PHP and MySQL technologies.
Drupal is a free and open source modular framework and content management system (CMS) written in the programming language PHP. Drupal, like many modern CMSs, allows the system administrator to create and organize content.
osCommerce is an online e-commerce shop solution that offers a wide range of out-of-the-box features that all-ows online stores to be setup.
CakePHP enables you to build web applications faster, using code generation features to rapidly build prototypes. There is no complicated configuration, just setup your database and you’re ready to go.
Joomla! is a free, open source content management system for publishing content on the world wide web and intranets. Joomla! includes features such as page caching to improve performance.
Php-Nuke is a popular Internet forum package written in the PHP programming language. The name “phpBB” is an abbreviation of PHP Bulletin Board. Available under the GNU General Public License, phpBB is free software.
Tiki Wiki is a CMS with many built-in features and functions. The feature list is large enough to meet most of your requirements.
Symfony is a full-stack framework, a library of cohesive classes written in PHP. It provides an architecture, components and tools for developers to build complex web applications faster.