Drupal is a free, open source web publishing package that facilitates the easy organization, management, and publication of content online. Drupal is written in PHP and is used as the back-end framework for website ranging from personal blogs to corporate and governmental webpages. The basic Drupal system- known as Drupal core - includes account registration and maintenance, menu management, RSS feeds, taxonomy, page layout customization, and system administration. The Drupal community has also manufactured thousands of free modules (or customized addons) that expand Drupal's features and extend its capabilities. Drupal appeals to a wide variety of users because the framework requires little programming knowledge to operate but it also offers a sophisticated interface for developers. Drupal hosts a semiannual conference that alternates between North America and European locations. The 2014 conference drew more than 3,700 people - speaking to the expanding reach and importance of this web publishing tool.