Under a budget from the TYPO3 Association the licensing team investigates the currently used licenses. This project aims to clarify the current state and the advantages and disadvantages of the used licenses in the different TYPO3 projects and contexts.
More info can be found on: https://forge.typo3.org/projects/team-licensing/
Please feel free to join the project if you want to contribute.
The TYPO3 project, represented by the TYPO3 Association, uses different licenses
- for the distribution of software and documentation
- for contributions from individuals and corporations
We chose to distribute licenses as they support the vision and mission of the TYPO3 project:
"Inspiring People to Share" and "Jointly Innovate Excellent Free Software Enabling People to Communicate"
Our Contributor License Agreements are based on the Apache CLA and adapted to our needs. In our search for licenses we have found their model to be the fairest and most effective for both the contributors and the Association.
Generally, contributors retain full rights to use their original work, whilst giving the TYPO3 Association and its projects the right to distribute and build upon their work within the TYPO3 project.
Software distributions are licensed as follows:
- TYPO3 CMS 3.x, 4.x, 6.x and 7.x and higher are licensed under the GNU General Public License version 2 or later
Extensions are essentially modifications of the original source code and therefore still fall under the GNU General Public License version 2. This means you are allowed to sell the Extension as long as you do not change the license terms. Your customer is allowed to do everything with the extension (including an upload to the TER), as long as your customer dos not violate the license terms.
Remember that TYPO3 is GPL software and at the same moment you extend TYPO3 your extensions are legally covered by GPL. This does not force you to share your extension, but it should inspire you to do so and legally you cannot prevent anyone who gets hold of your extension code from using it and further develop it.The TYPO3 Extension API is designed to make sharing of your work easy as well as using others work easy. Remember TYPO3 is Open Source Software and we rely on each other in the community to develop it further.
If you have any questions about TYPO3 software licensing or contributions to TYPO3, please get in touch with us.