Drupal is a free and open-source content management framework written in PHP and distributed under the GNU General Public License. Drupal provides a back-end framework for at least 2.3% of all websites worldwide – ranging from personal blogs to corporate, political, and government sites. Systems also use Drupal for knowledge management and for business collaboration.
As of March 2019, the community comprised more than 1.37 million members, including 114,000 users actively contributing, resulting in more than 42,650 free modules that extend and customize functionality, over 2,750 free themes that change the look and feel, and at least 1,270 free distributions that allow users to quickly and easily set up a complex, use-specific in fewer steps.
The standard release, contains basic features common to content-management systems. These include user account registration and maintenance, menu management, RSS feeds, taxonomy, page layout customization, and system administration. The core installation can serve as a simple website, a single- or multi-user blog, an Internet forum, or a community website providing for user-generated content.
Although Drupal offers a sophisticated API for developers, basic Web-site installation and administration of the framework require no programming skills.
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