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The existing freedoms were already numbered one to three, but this freedom should come before the others, so it was added as "freedom zero". [4] [5] The modern definition defines free software by whether or not the recipient has the following four freedoms: [6] The freedom to run the program as you wish, for any purpose (freedom 0).
Free software, libre software, libreware [1] [2] sometimes known as freedom-respecting software is computer software distributed under terms that allow users to run the software for any purpose as well as to study, change, and distribute it and any adapted versions.
The free software movement is a social movement with the goal of obtaining and guaranteeing certain freedoms for software users, namely the freedoms to run, study, modify, and share copies of software. [1] [2] Software which meets these requirements, The Four Essential Freedoms of Free Software, is termed free software.
"Free and open-source software" (FOSS) is an umbrella term for software that is considered free software and/or open-source software. [1] The precise definition of the terms "free software" and "open-source software" applies them to any software distributed under terms that allow users to use, modify, and redistribute said software in any manner they see fit, without requiring that they pay ...
The Free Software Definition is often called "the four freedoms" within the free software community in reference to the speech and fundamental principles. World War II Victory Medal (United States), which includes the Four Freedoms on its reverse.
The FSF's Free Software Definition focuses on the user's unrestricted rights to use a program, to study and modify it, to copy it, and to redistribute it for any purpose, which are considered by the FSF the four essential freedoms.
The GNU Project and Free Software – defines four essential software freedoms, shows ethical and social advantages of using and creating free software and explains Stallman's personal background on starting the GNU Project.
In February 1986 Richard Stallman formally defined "free software" with the publication of The Free Software Definition in the FSF's now-discontinued GNU's Bulletin [3] as software which can be used, studied, modified, and redistributed with little or no restriction, his four essential software freedoms. [3]