WordPress Developers are responsible for both back-end and front-end development, including creating WordPress themes and plugins. They have different programming skills such as namely PHP, HTML5, CSS3, and JavaScript. WordPress was released on May 27, 2003, by its founders, American developer Matt Mullenweg and English developer Mike Little, as a fork of b2/cafelog. The software is released under the GPLv2 (or later) license To function, WordPress has to be installed on a web server, either part of an Internet hosting service like WordPress.com or a computer running the software package WordPress.org in order to serve as a network host in its own right. A local computer may be used for single-user testing and learning purposes.