We are pleased to announce that the board of directors of Open Source Matters have approved a change of license of the Joomla Framework to the Lesser General Public License, or LGPL for short. This is an historic moment because it is a mighty step towards fulfilling Joomla’s mission to become a “platform” on which to build many types of applications.
Read more https://developer.joomla.org/news/582-lgpl-license-change-approved-for-the-joomla-framework.html