WordPress is a free and open-source content management system (CMS) based on PHP and MySQL. Features include a plugin architecture and a template system. At that time, WordPress was merely a free blogging forum for users. Since then,WordPress has evolved to be a full content management system with widgets, plugins and customizable themes. WordPress is licensed under GPLv2, which lists terms and conditions for copying, modifying and distributing free software By Arslan Sadique