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<h1 class="title">GNU Lesser General Public License (LGPL)</h1>
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<p>Qt is available under the LGPL (version 2.1).</p>
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<p>Reference: <a href="http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html">GNU Lesser General Public License, version 2.1</a></p>
<pre class="cpp">                  GNU LESSER GENERAL PUBLIC LICENSE
                       Version <span class="number">2.1</span><span class="operator">,</span> February <span class="number">1999</span>

 Copyright (C) <span class="number">1991</span><span class="operator">,</span> <span class="number">1999</span> Free Software Foundation<span class="operator">,</span> Inc<span class="operator">.</span>
 <span class="number">51</span> Franklin Street<span class="operator">,</span> Fifth Floor<span class="operator">,</span> Boston<span class="operator">,</span> MA  <span class="number">02110</span><span class="operator">-</span><span class="number">1301</span>  USA
 Everyone is permitted to copy and distribute verbatim copies
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  &lt;signature of Ty Coon&gt;, 1 April 1990
  Ty Coon, President of Vice

That'</span>s all there is to it<span class="operator">!</span></pre>
<a name="digia-qt-lgpl-exception-version-1-1"></a>
<h2>Digia Qt LGPL Exception version 1.1</h2>
<p>As a special exception to the GNU Lesser General Public License version 2.1, the object code form of a &quot;work that uses the Library&quot; may incorporate material from a header file that is part of the Library. You may distribute such object code under terms of your choice, provided that the incorporated material (i) does not exceed more than 5% of the total size of the Library; and (ii) is limited to numerical parameters, data structure layouts, accessors, macros, inline functions and templates.</p>
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