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revision 1.156 by gnun, Mon Jan 1 06:22:02 2018 UTC revision 1.159 by th_g, Mon Apr 23 17:57:32 2018 UTC
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1  <!--#include virtual="/server/header.html" -->  <!--#include virtual="/server/header.html" -->
2  <!-- Parent-Version: 1.84 -->  <!-- Parent-Version: 1.85 -->
3  <title>What is free software?  <title>What is free software?
4  - GNU Project - Free Software Foundation</title>  - GNU Project - Free Software Foundation</title>
5    
# Line 29  about subtle issues.  See the <a href="# Line 29  about subtle issues.  See the <a href="#
29  below for a list of changes that affect the definition of free  below for a list of changes that affect the definition of free
30  software.  software.
31  </p>  </p>
32    
33    <p>
34    &ldquo;Open source&rdquo; is something different: it has a very
35    different philosophy based on different values.  Its practical
36    definition is different too, but nearly all open source programs are
37    in fact free.  We explain the
38    difference in <a href="/philosophy/open-source-misses-the-point.html">
39    Why &ldquo;Open Source&rdquo; misses the point of Free Software</a>.
40    </p>
41  </blockquote>  </blockquote>
42    
43  <p>  <p>
# Line 59  an instrument of unjust power</a>. Line 68  an instrument of unjust power</a>.
68    
69  <p>  <p>
70  A program is free software if the program's users have the  A program is free software if the program's users have the
71  four essential freedoms:  four essential freedoms: <a href="#f1">[1]</a>
72  </p>  </p>
73    
74  <ul>  <ul>
# Line 69  four essential freedoms: Line 78  four essential freedoms:
78        does your computing as you wish (freedom 1). Access to the source        does your computing as you wish (freedom 1). Access to the source
79        code is a precondition for this.        code is a precondition for this.
80    </li>    </li>
81    <li>The freedom to redistribute copies so you can help your neighbor    <li>The freedom to redistribute copies so you can help others
82        (freedom 2).        (freedom 2).
83    </li>    </li>
84    <li>The freedom to distribute copies of your modified versions    <li>The freedom to distribute copies of your modified versions
# Line 545  You can review the complete list of chan Line 554  You can review the complete list of chan
554  the <a href="http://web.cvs.savannah.gnu.org/viewvc/www/philosophy/free-sw.html?root=www&amp;view=log">cvsweb  the <a href="http://web.cvs.savannah.gnu.org/viewvc/www/philosophy/free-sw.html?root=www&amp;view=log">cvsweb
555  interface</a>.</p>  interface</a>.</p>
556    
557    <h3 style="font-size:1em">Footnote</h3>
558    <ol>
559    <li id="f1">The reason they are numbered 0, 1, 2 and 3 is historical. Around
560    1990 there were three freedoms, numbered 1, 2 and 3. Then we realized that
561    the freedom to run the program needed to be mentioned explicitly.
562    It was clearly more basic than the other three, so it properly should
563    precede them. Rather than renumber the others, we made it freedom&nbsp;0.</li>
564    </ol>
565    
566  </div><!-- for id="content", starts in the include above -->  </div><!-- for id="content", starts in the include above -->
567  <!--#include virtual="/server/footer.html" -->  <!--#include virtual="/server/footer.html" -->
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