Zen Cart Customization
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.

WordPress Customization
WordPress is a blog publishing system written in PHP and backed by a MySQL database. WordPress supports one weblog per installation, though multiple concurrent copies may.

Joomla Customization
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.

CMS
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.

Drupal Customization
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.

PHP-NUKE
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.

ELGG
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.

e107.org
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.

OsCommerce Customization
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 fairly quickly with ease, and is available or free as an Open Source.