GPLFamilien
GPLFamilien is a term used to describe a group of free and open-source software licenses that are all derived from or related to the GNU General Public License (GPL). These licenses share a common philosophy of ensuring that users have the freedom to run, study, share, and modify the software. The core principle behind these licenses is copyleft, which means that any derivative works of software released under a GPL-style license must also be released under the same or a compatible license.
The most prominent member of the GPLFamilien is the GNU General Public License itself, with versions like
The GPLFamilien licenses are foundational to the free software movement and have been instrumental in the