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+<!--#include virtual="/server/header.html" -->
+<!-- Parent-Version: 1.77 -->
+<title>How Free Software and Open Source Relate as Categories of
+Programs
+- GNU Project - Free Software Foundation</title>
+ <!--#include virtual="/philosophy/po/free-open-overlap.translist" -->
+<!--#include virtual="/server/banner.html" -->
+<h2>How Free Software and Open Source Relate as Categories of Programs</h2>
+
+<p>Here's how <a href="/philosophy/open-source-misses-the-point.html">free software and open source</a> relate as categories of
+programs:</p>
+
+<pre>
+<code>
+ /----------------------------------------------\
+ / | | \
+ / | | \
+ / | | \
+ | |
+ | Source license is GNU *GPL, Apache, |
+ | original BSD, modified BSD, |
+free | X11, expat, Python, MPL, etc., |
+ | and executable is not tivoized | open source
+ | |
+ | |
+ \ | |
+ \ | |
+ \ | | /
+ \---------------------------------------------- /
+ | tivoized (tyrant) devices | O | /
+ ----------------------------------------------/
+</code>
+</pre>
+
+<p>Among all programs that are open source, only a minuscule fraction
+are not free. If the bottom row were drawn to scale, its text would
+have to be in a tiny font, perhaps too small to read.</p>
+
+<p>Tivoized or <a href="/philosophy/proprietary/proprietary-tyrants.html">&ldquo;tyrant&rdquo; devices</a> contain nonfree
+executables made from source code that is free. As of 2013, many
+Android devices are tyrants, but some are not.</p>
+
+<!-- don't link here to the list of nonfree licenses.
+That gives the wrong idea, since most of those are not open source either. -->
+
+<p>&ldquo;O&rdquo; stands for &ldquo;other&rdquo; and refers to
+programs whose source is under licenses which are open source but not
+free. Several such licenses were written around 2000, and they were
+used to release some programs. It has been a long time since we heard
+of software released under those licenses. We don't know whether they
+are still used.</p>
+
+<p>Most nonfree licenses are not open source either.</p>
+
+</div><!-- for id="content", starts in the include above -->
+<!--#include virtual="/server/footer.html" -->
+<div id="footer">
+<div class="unprintable">
+
+<p>Please send general 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. Broken links and other corrections or suggestions can be sent
+to <a href="mailto:webmasters@gnu.org">&lt;webmasters@gnu.org&gt;</a>.</p>
+
+<p><!-- TRANSLATORS: Ignore the original text in this paragraph,
+ 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>
+</div>
+
+<p>Copyright &copy; 2015 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>.</p>
+
+<!--#include virtual="/server/bottom-notes.html" -->
+
+<p class="unprintable">Updated:
+<!-- timestamp start -->
+$Date: 2015/01/08 15:59:31 $
+<!-- timestamp end -->
+</p>
+</div>
+</div>
+</body>
+</html>