WordPress is an open source blogging tool and publishing platform powered by PHP and MySQL. It is often customized into a content management system (CMS). It has many features including a plug-in architecture and a template system. WordPress is used by over 14.7% of Alexa Internet’s “top 1 million” websites and as of August 2011 powers 22% of all new websites. WordPress is currently the most popular CMS in use on the Internet.