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• Richard Stallman argued for the necessity of free digital hardware designs in his 2015 article 'Why We Need Free Digital Hardware Designs' published in Wired and his 2015 paper 'Free Hardware and Free Hardware Designs' published by the Free Software Foundation.
• The Free Software Foundation (FSF) defines free software as a matter of liberty rather than price, a definition adopted from Richard Stallman's work.
• The Free Software Foundation considers free software to be a subset of open-source software, and Richard Stallman notes that DRM software can be developed as open source while failing to qualify as free software because it restricts user freedom.
• Richard Stallman, leader of the Free software movement and member of the Free Software Foundation, opposes applying the term 'open source' to what he refers to as 'free software,' considering the equation of the two terms incorrect and misleading.
• Richard Stallman of the Free Software Foundation (FSF) opposes the term 'Open Source' being applied to what the FSF refers to as 'free software', despite initially accepting the term.
• Richard Stallman opposes the pragmatism of the Open Source Initiative because he fears that the Free Software Foundation's idealistic standards for software freedom are threatened by compromising on those ideals.
• The General Public License (GPL) is a license exclusively for the GNU project created by Richard Stallman and managed by the Free Software Foundation (FSF). Under the GPL, copyright notices cannot be removed, and derived programs must be published under the GPL.
• During the 1980s, Richard Stallman initiated the GNU Project to create a free operating system, authored essays on freedom, established the Free Software Foundation, and wrote several free-software licenses.
• Richard Stallman opposes the pragmatism of the Open Source Initiative because he fears that compromising on the Free Software Foundation's idealistic standards for software freedom threatens the ideals of freedom and community.
• Richard Stallman argues that the 'Open Source' movement misses the point of 'Free Software' in an essay published by the Free Software Foundation.
• The earliest known publication of Richard Stallman's free software definition appeared in the February 1986 edition of the Free Software Foundation's 'GNU's Bulletin' publication.
• Richard Stallman founded the Free Software Foundation (FSF) in 1985, which was built around four essential freedoms: to run, study, modify, and share software without restriction.
• Richard Stallman founded the Free Software Foundation and led the development of an open source alternative to the AT&T-owned Unix operating system.