Wordpress is an open source web application / content management system (CMS) for managing a dynamic website. It allows you to edit a website's content, without understanding or touching any code. A site administrator can log into the CMS "backend" and, from there, add and delete pages, change text and images, and manage the site's behavior. Wordpress is often used as a blog publishing application powered by PHP and MySQL. It has many features including a plugin architecture and a templating system. Used by over 12 of the 1,000,000 biggest websites, WordPress is the most popular CMS in use today.
WordPress has a template system, which includes widgets that can be rearranged without editing PHP or HTML code, as well as themes that can be installed and switched between. The PHP and HTML code in themes can also be edited for more advanced customizations. WordPress also features integrated link management; a search engine-friendly, clean permalink structure; the ability to assign nested, multiple categories to articles; and support for tagging of posts and articles. Automatic filters that provide for proper formatting and styling of text in articles (for example, converting regular quotes to smart quotes) are also included. WordPress also supports the Trackback and Pingback standards for displaying links to other sites that have them linked to a post or article. Finally, WordPress has a rich plugin architecture which allows users and developers to extend its functionality beyond the features that come as part of the base install.