Concept: Drupal Licensing
Prerequisite knowledge
Concept: Drupal as a Content Management System
What is Drupal Licensing?
Drupal and all contributed files hosted on Drupal.org are licensed under the GNU General Public License (GPL), version 2 or later. That means you are free to download, reuse, modify, and distribute any files that are part of a project on Drupal.org under the terms of GPL version 2 or 3. You can also run the core software in combination with any code with any license that is compatible with version 2 or 3.
Drupal contributors should follow these guidelines:
- All files (PHP, JavaScript, images, Flash, etc.) that are part of a project on Drupal.org have to be under GPL version 2 or later.
- All Drupal contributors retain copyright on their code, but agree to release it under the same license as Drupal.
- Drupal modules and themes are a derivative work of Drupal. If you distribute them, you must do so under the terms of GPL version 2 or later.
- All content on Drupal.org itself is copyrighted by its original contributors, and is licensed under the Creative Commons Attribution-ShareAlike license 2.0.
- Sample code on Drupal.org is also available under GPL version 2 or later.
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Additional resources
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