/[www]/www/philosophy/free-sw.html

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-revision 1.121 by rms,
Mon May 27 03:49:32 2013 UTC
+revision 1.126 by rms,
Fri Dec 20 09:31:03 2013 UTC
 Line 1
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+ <!-- Parent-Version: 1.75 -->
- <title>What is free software? - GNU Project - Free Software Foundation (FSF)</title>
+ <title>What is free software?
+ - GNU Project - Free Software Foundation</title>
  <meta http-equiv="Keywords" content="GNU, FSF, Free Software Foundation, Linux, Emacs, GCC, Unix, Free Software, Operating System, GNU Kernel, HURD, GNU HURD, Hurd" />
  <meta http-equiv="Description" content="Since 1983, developing the free Unix style operating system GNU, so that computer users can have the freedom to share and improve the software they use." />
- <link rel="alternate" title="What's New" href="http://www.gnu.org/rss/whatsnew.rss" type="application/rss+xml" />
- <link rel="alternate" title="New Free Software" href="http://www.gnu.org/rss/quagga.rss" type="application/rss+xml" />
  <!--#include virtual="/philosophy/po/free-sw.translist" -->
  <!--#include virtual="/server/banner.html" -->
-Line 28 
 software.
+Line 27 
 software.
  <p>
  &ldquo;Free software&rdquo; means software that respects users'
  freedom and community.  Roughly, <b>the users have the freedom to run,
- copy, distribute, study, change and improve the software</b>.  With these
+ copy, distribute, study, change and improve the software</b>.
- freedoms, the users (both individually and collectively) control the
- program and what it does for them.
- </p>
- <p>
- When users don't control the program, the program controls the users.
- The developer controls the program, and through it controls the users.
- This nonfree or &ldquo;proprietary&rdquo; program is therefore an
- instrument of unjust power.
  </p>
  <p>
-Line 47 
 in &ldquo;free speech,&rdquo; not as in
+Line 37 
 in &ldquo;free speech,&rdquo; not as in
  </p>
  <p>
+ With these freedoms, the users (both individually and collectively)
+ control the program and what it does for them.  When users don't
+ control the program, the program controls the users.  The developer
+ controls the program, and through it exercises power over the users.
+ Therefore, a &ldquo;nonfree&rdquo; or &ldquo;proprietary&rdquo; program
+ is <a href="/philosophy/free-software-even-more-important.html"> an
+ instrument of unjust power</a>.
+ </p>
+ <p>
  A program is free software if the program's users have the
  four essential freedoms:
  </p>
 Line 68 
 four essential freedoms:
  </ul>
  <p>
- A program is free software if users have all of these freedoms.  Thus,
+ A program is free software if it gives users adequately all of these
- you should be free to redistribute copies, either with or without
+ freedoms.  Otherwise, it is nonfree.  While we can distinguish various
- modifications, either gratis or charging a fee for distribution, to
+ nonfree distribution schemes in terms of how far they fall short of
+ being free, we consider them all equally unethical.</p>
+ <p>The rest of this page clarifies certain points about what makes
+ specific freedoms adequate or not.</p>
+ <p>Freedom to distribute (freedoms 2 and 3) means you are free to
+ redistribute copies, either with or without modifications, either
+ gratis or charging a fee for distribution, to
  <a href="#exportcontrol">anyone anywhere</a>.  Being free to do these
  things means (among other things) that you do not have to ask or pay
  for permission to do so.
-Line 229 
 eliminate or override these restrictions
+Line 237 
 eliminate or override these restrictions
  is refuse to impose them as conditions of use of the program.  In this
  way, the restrictions will not affect activities and people outside the
  jurisdictions of these governments.  Thus, free software licenses
- must not require obedience to any export regulations as a condition of
+ must not require obedience to any nontrivial export regulations as a
- any of the essential freedoms.
+ condition of exercising any of the essential freedoms.
+ </p>
+ <p>
+ Merely mentioning the existence of export regulations, without making
+ them a condition of the license itself, is acceptable since it does
+ not restrict users.  If an export regulation is actually trivial for
+ free software, then requiring it as a condition is not an actual
+ problem; however, it is a potential problem, since a later change in
+ export law could make the requirement nontrivial and thus render the
+ software nonfree.
  </p>
  <p>
-Line 340 
 was changed.</p>
+Line 358 
 was changed.</p>
  <ul>
+ <li><a href="http://web.cvs.savannah.gnu.org/viewvc/www/philosophy/free-sw.html?root=www&amp;r1=1.121&amp;r2=1.122">Version
+.122</a>: An export control requirement is a real problem if the
+ requirement is nontrivial; otherwise it is only a potential problem.</li>
+ <li><a href="http://web.cvs.savannah.gnu.org/viewvc/www/philosophy/free-sw.html?root=www&amp;r1=1.117&amp;r2=1.118">Version
+.118</a>: Clarification: the issue is limits on your right to modify,
+ not on what modifications you have made.  And modifications are not limited
+ to &ldquo;improvements&rdquo;</li>
  <li><a href="http://web.cvs.savannah.gnu.org/viewvc/www/philosophy/free-sw.html?root=www&amp;r1=1.110&amp;r2=1.111">Version
 .111</a>: Clarify 1.77 by saying that only
  retroactive <em>restrictions</em> are unacceptable.  The copyright
-Line 424 
 versions you distribute to the author.</
+Line 451 
 versions you distribute to the author.</
  </ul>
  <p>There are gaps in the version numbers shown above because there are
- other changes in this page that do not affect the definition as such.
+ other changes in this page that do not affect the definition or its
- These changes are in other parts of the page.  You can review the
+ interpretations.  For instance, the list does not include changes in
- complete list of changes to the page through
+ asides, formatting, spelling, punctuation, or other parts of the page.
+ You can review the complete list of changes to the page through
  the <a href="http://web.cvs.savannah.gnu.org/viewvc/www/philosophy/free-sw.html?root=www&amp;view=log">cvsweb
  interface</a>.</p>
- </div>
+ </div><!-- for id="content", starts in the include above -->
  <!--#include virtual="/server/footer.html" -->
  <div id="footer">
- <p>
+ <p>Please send general FSF &amp; GNU inquiries to
- Please send FSF &amp; GNU inquiries to
  <a href="mailto:gnu@gnu.org">&lt;gnu@gnu.org&gt;</a>.
  There are also <a href="/contact/">other ways to contact</a>
- the FSF.
+ the FSF.  Broken links and other corrections or suggestions can be sent
- <br />
+ to <a href="mailto:webmasters@gnu.org">&lt;webmasters@gnu.org&gt;</a>.</p>
- Please send broken links and other corrections or suggestions to
- <a href="mailto:webmasters@gnu.org">&lt;webmasters@gnu.org&gt;</a>.
+ <p><!-- TRANSLATORS: Ignore the original text in this paragraph,
- </p>
+         replace it with the translation of these two:
+         We work hard and do our best to provide accurate, good quality
+         translations.  However, we are not exempt from imperfection.
+         Please send your comments and general suggestions in this regard
+         to <a href="mailto:web-translators@gnu.org">
+         &lt;web-translators@gnu.org&gt;</a>.</p>
+         <p>For information on coordinating and submitting translations of
+         our web pages, see <a
+         href="/server/standards/README.translations.html">Translations
+         README</a>. -->
+ Please see the <a
+ href="/server/standards/README.translations.html">Translations
+ README</a> for information on coordinating and submitting translations
+ of this article.</p>
+ <!-- Regarding copyright, in general, standalone pages (as opposed to
+      files generated as part of manuals) on the GNU web server should
+      be under CC BY-ND 3.0 US.  Please do NOT change or remove this
+      without talking with the webmasters or licensing team first.
+      Please make sure the copyright date is consistent with the
+      document.  For web pages, it is ok to list just the latest year the
+      document was modified, or published.
+      If you wish to list earlier years, that is ok too.
+      Either "2001, 2002, 2003" or "2001-2003" are ok for specifying
+      years, as long as each year in the range is in fact a copyrightable
+      year, i.e., a year in which the document was published (including
+      being publicly visible on the web or in a revision control system).
+      There is more detail about copyright years in the GNU Maintainers
+      Information document, www.gnu.org/prep/maintain. -->
- <p>
+ <p>Copyright &copy; 1996-2002, 2004-2007, 2009, 2010, 2012, 2013
- Please see the
+ Free Software Foundation, Inc.</p>
- <a href="/server/standards/README.translations.html">Translations
- README</a> for information on coordinating and submitting
- translations of this article.
- </p>
- <p>
- Copyright &copy; 1996-2002, 2004-2007, 2009, 2010, 2012 Free Software
- Foundation, Inc.
- </p>
  <p>This page is licensed under a <a rel="license"
  href="http://creativecommons.org/licenses/by-nd/3.0/us/">Creative
- Commons Attribution-NoDerivs 3.0 United States License</a>.
+ Commons Attribution-NoDerivs 3.0 United States License</a>.</p>
- </p>
  <!--#include virtual="/server/bottom-notes.html" -->
-Line 470 
 $Date$
+Line 519 
 $Date$
  <!-- timestamp end -->
  </p>
  </div>
  </div>
  </body>
  </html>

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