The GNU General Public License (GPL) is a widely used free software license that grants users the right to use, modify, and redistribute software. It is the most popular open source license and is used by many Drupal projects. The GPL is a copyleft license, meaning that any derivative work must also be distributed under the same license. This ensures that the source code remains freely available and that any modifications to the code are also made available to the public.

The GPL is a legal document that outlines the terms and conditions of using software that is released under the GPL. It is important to understand the GPL before using any software released under it. The GPL is designed to protect the rights of users and developers, and to ensure that software remains free and open source. It also ensures that any modifications to the software are made available to the public.

The GPL is an important part of the Drupal community, as it ensures that Drupal remains free and open source. All Drupal modules, themes, and distributions must be released under the GPL. This ensures that the code remains freely available and that any modifications to the code are also made available to the public.

The GPL is an important part of the open source community, and it is important to understand the terms and conditions of the license before using any software released under it. By understanding the GPL, users and developers can ensure that their rights are protected and that software remains free and open source.