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<li class="level1"><a href="#lgpl-version-3">LGPL version 3</a></li>
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<h1 class="title">GNU Lesser General Public License (LGPL)</h1>
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<p>Qt is available under the GNU Lesser General Public License version 3 and the GNU Lesser General Public License version 2.1&#x2e;</p>
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<li><a href="http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html">GNU Lesser General Public License, version 2.1</a></li>
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<a name="lgpl-version-3"></a>
<h2 id="lgpl-version-3">LGPL version 3</h2>
<pre class="cpp">                   GNU LESSER GENERAL PUBLIC LICENSE
                       Version <span class="number">3</span><span class="operator">,</span> <span class="number">29</span> June <span class="number">2007</span>

 Copyright (C) <span class="number">2007</span> Free Software Foundation<span class="operator">,</span> Inc<span class="operator">.</span> <span class="operator">&lt;</span>http:<span class="comment">//fsf.org/&gt;</span>
 Everyone is permitted to copy and distribute verbatim copies
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  This version of the GNU Lesser General Public License incorporates
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<a name="lgpl-version-2-1"></a>
<h2 id="lgpl-version-2-1">LGPL version 2.1</h2>
<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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<span class="operator">[</span>This is the first released version of the Lesser GPL<span class="operator">.</span>  It also counts
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           How to Apply These Terms to Your New Libraries

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Also add information on how to contact you by electronic and paper mail<span class="operator">.</span>

You should also get your employer (<span class="keyword">if</span> you work as a programmer) <span class="keyword">or</span> your
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  library `Frob<span class="char">' (a library for tweaking knobs) written by James Random Hacker.

  &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>
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