28 Facts About Drupal

Drupal is a free and open-source web content management system (CMS) written in PHP and distributed under the GNU General Public License.

Standard release of Drupal, known as Drupal core, contains basic features common to content-management systems.

When compared with notable frameworks, Drupal meets most of the generally accepted feature requirements for such web frameworks.

Drupal was originally written by Dries Buytaert as a message board for his friends to communicate in their dorms while working on his Master's degree at the University of Antwerp.

Name Drupal represents an English rendering of the Dutch word druppel, which means "drop".

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Interest in Drupal got a significant boost in 2003 when it helped build "DeanSpace" for Howard Dean, one of the candidates in the U S Democratic Party's primary campaign for the 2004 U S presidential election.

Drupal has won several Packt Open Source CMS Awards and won the Webware 100 three times in a row.

Drupal 6 was released on February 13, 2008, on March 5, 2009, Buytaert announced a code freeze for Drupal 7 for September 1, 2009.

Drupal 7 was released on January 5, 2011, with release parties in several countries.

Drupal 8 includes new features and improvements for both users and developers, including: a revamped user interface; WYSIWYG and in-place editing; improved mobile support; added and improved key contributed modules including Views, Date, and Entity Reference; introduced a new object-oriented backend leveraging Symfony components; revamped configuration management; and improved multilingual support.

Drupal maintains a detailed changelog of core feature updates by version.

Drupal core includes modules that can be enabled by the administrator to extend the functionality of the core website.

Drupal includes core themes, which customize the "look and feel" of Drupal sites, for example, Garland and Bartik.

Drupal localization is built on top of gettext, the GNU internationalization and localization library.

In particular, Drupal 6 introduced an abstraction layer that allowed programmers to create SQL queries without writing SQL.

Drupal 9 extends the data abstraction layer so that a programmer no longer needs to write SQL queries as text strings.

Drupal is a good framework for building sites accessible to people with disabilities, because many of the best practices have been incorporated into Drupal Core.

Drupal 8 saw many improvements from the Authoring Tool Accessibility Guidelines 2.

Drupal 8 has good semantic support for rich web applications through WAI-ARIA.

Drupal core is modular, defining a system of hooks and callbacks, which are accessed internally via an API.

The Drupal community has the saying, "Never hack core, " a strong recommendation that site developers do not change core files.

Inclusion of the PHPTemplate and XTemplate engines in Drupal addressed user concerns about flexibility and complexity.

Drupal is based on the Presentation Abstraction Control architecture, or PAC.

Notable Drupal users include NBC, Taboola, Patch, We the People, Tesla, Oxford, NASA, Nokia, the European Commission, UNICEF, Wish, and Rainforest Alliance.

Drupal's policy is to announce the nature of each security vulnerability once the fix is released.

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Drupal maintains a security announcement mailing list, a history of all security advisories, a security team home page, and an RSS feed with the most recent security advisories.

In mid-October 2014, Drupal issued a "highly critical" security advisory regarding an SQL injection bug in Drupal 7, known as Drupageddon.

Drupal 6 reached end-of-life on February 24, 2016, and does not get official security updates.