Drupal is open source of content management which is distributed under GNS Public License. Drupal is also free platform of CMS (Content Management Services) which is created or written in PHP language.
The standard release of Drupal is Drupal core. Drupal Core contain all those features which you can mostly see in CMSs. It provide your ability of flexibility of your account privileges and customized layout and ability to maintain indusial user’s account and administration menu, logging, RSS-feedback and also provide ability to create options for interactive community websites.
Sometimes Drupal describes as Contents Management Framework because of Drupal offers sophisticated programming for providing interference for developers.
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