WordPress is a free and open source blogging tool and a content management system (CMS) based on PHP and MySQL, which runs on a web hosting service.[5] Features include a plugin architecture and a template system. WordPress is used by more than 22.0% of the top 10 million websites as of August 2013.[6] WordPress is the most popular blogging system in use on the Web,[7] at more than 60 million websites.[8]
It was first released on May 27, 2003, by its founders, Matt Mullenweg[1] and Mike Little,[9] as a fork of b2/cafelog. As of February 19, 2014, version 3.8 had been downloaded more than 20 million times.[10] The license under which WordPress software is released is the GPLv2 (or later) from the Free Software Foundation.[11]
WordPress users may install and switch between Themes. Themes allow users to change the look and functionality of a WordPress website or installation without altering the information content or structure of the site. Themes may be installed using the WordPress "Appearance" administration tool or Theme folders may be uploaded via FTP.[12] The PHP, HTML & CSS code found in Themes can be added or edited for providing advanced features. Thousands of WordPress Themes exist, some free, and some premium (paid for) templates. WordPress users may also create and develop their own custom Themes if they have the knowledge and skill to do so.
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