GNU General Public License: https://en.wikipedia.org/wiki/GNU_General_Public_License https://en.wikipedia.org/wiki/GNU_General_Public_License It's one of sever

GNU General Public License: https://en.wikipedia.org/wiki/GNU_General_Public_License https://en.wikipedia.org/wiki/GNU_General_Public_License It's one of several options for software licenses a developer or team can use when distributing a piece of software to help ensure that it and its derivates stay free and open-source.