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<h1 align="center">Qt Editions<br /><small></small></h1>
<p>Qt can be used to create both commercial and non-commercial software for a wide range of different deployment environments, and is supplied in a number of different forms to suit the needs of different kinds of developers.</p>
<p>In terms of license conditions, there are two main forms of Qt:</p>
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<li>The <a href="commercialeditions.html">Qt Commercial Editions</tt></a> are the commercial versions of <a href="aboutqt.html">Qt</tt></a>.</li>
<li>The <a href="opensourceedition.html">Qt Open Source Edition</tt></a> is the non-commercial version of Qt. It is freely available for download.</li>
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<p>You may write commercial, proprietary, or otherwise non-free software only if you have purchased one of the <a href="commercialeditions.html">commercial editions</tt></a>. If you purchase a commercial edition, you are entitled to technical support and upgrades on any supported platform.</p>
<p>The Desktop Edition also contains three database drivers (Oracle, IBM DB2, and Sybase), which are not included in the Open Source Edition because of license restrictions in the closed-source client libraries used to implement the drivers.</p>
<p>Users of commercial editions can also take advantage of <i>Qt Designer</i>'s support for commercial IDEs.</p>
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