Drupal is an open-source Content Management System, CMS. Open source refers to the fact that the actual source code that has been written to create Drupal is openly shared with the Drupal development community. Drupal's core modules, as well as contributed add-on modules that make up what we refer to as the building blocks for a feature rich web-solution, are open to the general community of developers. The reason this is important is that it allows the maximum possible extensibility allowing any module to be customized to meet the exact needs of any particular project. This allows a developer to deliver highly sophisticated web-solutions at a relatively low cost.
Content Management System, CMS
A CMS is basically just what it sounds like, a system that allows a non-technical person to easily manage content from within the site itself.
Who Uses Drupal
There are some pretty impressive organizations using Drupal including many top-level U.S. government agencies and Fortune 100 companies. Here are





