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The Free Software Foundation: Stallman's Organization for Software Freedom

The Free Software Foundation: Stallman's Organization for Software Freedom

The FSF, founded by Richard Stallman in 1985, promotes the ethical principle that software must be free to run, study, modify, and redistribute — and stewards the GPL license.

The Free Software Foundation (FSF) was founded by Richard Stallman in 1985 to support the GNU Project and promote software freedom as an ethical imperative. The FSF defines free software through four freedoms: - **Freedom 0**: Run the program for any purpose - **Freedom 1**: Study and modify the source code - **Freedom 2**: Redistribute copies - **Freedom 3**: Distribute modified versions The FSF stewards the The GNU General Public License (GPL): How Copyleft Works, the most widely used copyleft license, which requires derivative works to remain free — ensuring the "four freedoms" propagate through the software ecosystem. The FSF explicitly distinguishes itself from the open-source movement: while both support source code availability, the FSF frames freedom as a moral imperative ("free as in freedom, not free as in beer"), whereas the open-source movement emphasizes practical development benefits. Stallman considers the distinction fundamental. The organization has faced governance controversies, including disputes over Stallman's return to its board in 2021, which led several member organizations to distance themselves.

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April 13, 2026

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