GNU Operating System 2 Supported by the Free Software Foundation ABOUT GNU PHILOSOPHY LICENSES EDUCATION SOFTWARE Essays & articles Speeches & interviews Third party ideas Latest articles Audio & video Philosophy of the GNU Project Free software means that the software's users have freedom. (The issue is not about price: We developed the GNU operating system s0 that users can have freedom in their computing: Specifically, free software means users have the four essential freedoms: (0) to run the program; (1) to study and change the program in source code form, (2) to redistribute exact copies to distribute modified versions. Software differs from material objects such as chairs, sandwiches, and gasoline in that it can be and changed much more easily: These facilities are why software is useful; we believe program's users should be free to take advantage of them, not solely its developer: For further please select section from the menu above. See audio-video gnu:org for recordings of Richard Stallman's speeches: Introduction What is Free Software? Why we must insist on free software Proprietary software is often malware History_of GNUILinux Copyleft: Pragmatic Idealism Why Free Software Needs Free Documentation Selling Free Software is OK! Motives For Writing Free Software The Right to Read: A Dystopian Short Story by Richard Stallman and copied reading,