ProteGO Safe and it’s documentation is licensed under

The application’s source code is available under a well-known and open GPL-3.0 license. Link to the GitHub repository: https://github.com/ProteGO-Safe GNU General Public License v3.0 Permissions of this strong copyleft license are conditioned on making available complete source code of licensed works and modifications, which include larger works using a licensed work, under the same license. Copyright and license notices must be preserved. Contributors provide an express grant of patent rights.