Logo of "GPLv3." Says, "Free as in freedom" underneath.
https://hostux.social/system/media_attachments/files/113/172/362/434/516/914/original/bfc4fed70a09f3c3.png
From the preamble of the GNU GPL: "[T]he 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. [...]" https://u.fsf.org/3kz
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