http://mailiabenirc2uizhrm3nbhrgui4svjucst4ycno2ta7ncmm3ojqkvyd.onion/README.infos.html
By contrast,
the GNU General Public License is intended to guarantee your freedom to
share and change all versions of a program--to make sure it remains free
software for all its users. We, the Free Software Foundation, use the
GNU General Public License for most of our software; it applies also to
any other work released this way by its authors.