D. The Free Software Definition1
1. This material is at www.gnu.org/philosophy/free-sw.html on the GNU Web site. Because GNU requests a verbatim copy, links remain in place (underlined). View the document on the Web to ensure you are reading the latest copy and to follow the links.
We maintain this free software definition to show clearly what must be true about a particular software program for it to be considered free software.
“Free software” is a matter of liberty, not price. To understand the concept, you should think of “free” as in “free speech,” not as in “free beer.”
Free software is a matter of the users’ freedom to run, copy, distribute, study, change and improve the software. More precisely, it refers to four kinds of freedom, for ...
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