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GNU General Public License: Difference between revisions
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The '''GNU General Public License''' ('''GPL''') is one of the most important documents ever written on a computer. It is to [[Richard Stallman]] as the Ten Commandments is to Moses. | The '''GNU General Public License''' ('''GPL''') is one of the most important documents ever written on a computer. It is to [[Richard Stallman]] as the Ten Commandments is to Moses. Any software released under this license respects your [[freedom]] under strong copyleft, though it is not a guarantee the software itself is any good. | ||
== The four essential freedoms == | |||
According to gnu.org, a program is free software if the program's users have the four essential freedoms: | |||
* The freedom to run the program, for any purpose (freedom 0). | |||
* The freedom to study how the program works, and change it so it does your computing as you wish (freedom 1). Access to the source code is a precondition for this. | |||
* The freedom to redistribute copies so you can help your neighbor (freedom 2). | |||
* The freedom to distribute copies of your modified versions to others (freedom 3). By doing this you can give the whole community a chance to benefit from your changes. Access to the source code is a precondition for this. | |||
== External links == | |||
* [http://www.gnu.org/copyleft/gpl.html GNU General Public License] on gnu.org | |||
[[Category:Licenses]] | |||
[[Category:Free licenses]] | [[Category:Free licenses]] | ||
[[Category:Terms]] | |||
Latest revision as of 14:35, 24 February 2016
The GNU General Public License (GPL) is one of the most important documents ever written on a computer. It is to Richard Stallman as the Ten Commandments is to Moses. Any software released under this license respects your freedom under strong copyleft, though it is not a guarantee the software itself is any good.
The four essential freedoms
According to gnu.org, a program is free software if the program's users have the four essential freedoms:
- The freedom to run the program, for any purpose (freedom 0).
- The freedom to study how the program works, and change it so it does your computing as you wish (freedom 1). Access to the source code is a precondition for this.
- The freedom to redistribute copies so you can help your neighbor (freedom 2).
- The freedom to distribute copies of your modified versions to others (freedom 3). By doing this you can give the whole community a chance to benefit from your changes. Access to the source code is a precondition for this.
External links
- GNU General Public License on gnu.org