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<li class="level1"><a href="#purchasing-and-sales-information">Purchasing and Sales Information</a></li>
<li class="level1"><a href="#licenses-used-in-qt">Licenses Used in Qt</a></li>
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<h1 class="title">Qt Licensing</h1>
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<p>Qt is available under different licensing options designed to accommodate the needs of our various users.</p>
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<li>Enterprise, Professional, and Indie Mobile licenses.</li>
<li>Community license (GPL or LGPL versions 3 and 2.1).</li>
</ul>
<p><b>Note: </b>Some specific parts (modules) of the Qt framework are not available under the GNU LGPL version 2.1. See <a href="licensing.html#licenses-used-in-qt">Licenses Used in Qt</a> for details.</p><p>Qt licensed under Enterprise, Professional and Indie Mobile licenses are appropriate for development of proprietary/commercial software where you do not want to share any source code with third parties or otherwise cannot comply with the terms of the GNU LGPL version 3 or the GNU LGPL version 2.1.</p>
<p>Qt licensed under the <a href="lgpl.html">GNU Lesser General Public License (LGPL)</a> version 3 is appropriate for the development of Qt applications provided you can comply with the terms and conditions of the GNU LGPL version 3 (or GNU GPL version 3).</p>
<p>Qt licensed under the <a href="lgpl.html">GNU Lesser General Public License (LGPL)</a> version 2.1 is appropriate for the development of Qt applications provided you can comply with the terms and conditions of the GNU LGPL version 2.1.</p>
<p>Qt documentation is licensed under the terms of the <a href="fdl.html">GNU Free Documentation License (FDL)</a> version 1.3, as published by the Free Software Foundation. Alternatively, you may use the documentation in accordance with the terms contained in a written agreement between you and The Qt Company.</p>
<p>See <a href="http://qt.io/licensing/">http://qt.io/licensing/</a> for an overview of Qt licensing, and <a href="http://www.qt.io/download/">http://www.qt.io/download/</a> for details on what is included in each license type.</p>
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<h4 >Purchasing and Sales Information</h4>
<p>To purchase a Qt license, visit <a href="http://www.qt.io/download/">http://www.qt.io/download/</a>.</p>
<p>For further information and assistance about Qt licensing, please contact our sales via one of the following channels:</p>
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<tr valign="top" class="odd"><td >Web:</td><td ><a href="http://www.qt.io/contact-us/">http://www.qt.io/contact-us/</a></td></tr>
<tr valign="top" class="even"><td >Phone, U.S. office (for sales in North America):</td><td ><b>+1 408 433 9320</b></td></tr>
<tr valign="top" class="odd"><td >Phone, Norway office (for sales in the rest of the world):</td><td ><b>+47 2108 0420</b></td></tr>
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<a name="licenses-used-in-qt"></a>
<h4 >Licenses Used in Qt</h4>
<p>The following table lists parts of Qt that incorporate code licensed under licenses other than <a href="lgpl.html">GNU Lesser General Public License (LGPL)</a> or the commercial license, as well as Qt modules that are only available under a specific license or a version of a license.</p>
<p><a href="3rdparty.html">Third-party licenses</a> used in libraries that are supplied alongside Qt modules are also listed.</p>
<p><b>Note: </b>Cross-module dependencies are also described on a general level. All Qt modules depend on <a href="../qtcore/qtcore-index.html">Qt Core</a>.</p><div class="table"><table class="generic">
<thead><tr class="qt-style"><th >Qt Module/Tool</th><th >Component</th><th >Description</th><th >License Type</th><th >Notes</th></tr></thead>
<tr valign="top" class="odd"><td rowspan="30">Qt Core</td></tr>
<tr valign="top" class="even"><td ><a href="licenses.html#qsegfaulthandler-class">QSegfaultHandler</a></td><td >Parts of implementation of QSegfaultHandler class.</td><td >BSD-style</td><td ></td></tr>
<tr valign="top" class="odd"><td ><a href="licenses.html#qurl-fromuserinput">QUrl</a></td><td >Implementation of <a href="../qtcore/qurl.html#fromUserInput">QUrl::fromUserInput</a>().</td><td >Modified BSD</td><td ></td></tr>
<tr valign="top" class="even"><td ><a href="mac-licensing.html">Cocoa Platform Plugin</a></td><td >Specific parts of the Qt for OS X Cocoa port.</td><td >BSD-style</td><td ><a href="osx.html">Qt for OS X</a></td></tr>
<tr valign="top" class="odd"><td ><a href="qtmain.html">qtmain library</a></td><td >A helper library for writing a cross-platform main() function on Windows.</td><td >Modified BSD</td><td ><a href="windows-support.html">Qt for Windows</a></td></tr>
<tr valign="top" class="even"><td ><a href="3rdparty.html#des-des-cpp">DES</a></td><td >Implementation of DES encryption (des.cpp).</td><td >MIT</td><td ></td></tr>
<tr valign="top" class="odd"><td ><a href="3rdparty.html#shift-jis-text-codec">Shift-JIS Text Codec</a></td><td >A character encoding for Japanese.</td><td >BSD-style</td><td ></td></tr>
<tr valign="top" class="even"><td ><a href="3rdparty.html#iso-2022-jp-jis-text-codec">ISO-2022-JP (JIS) Text Codec</a></td><td >A widely used encoding for Japanese.</td><td >BSD-style</td><td ></td></tr>
<tr valign="top" class="odd"><td ><a href="3rdparty.html#euc-jp-text-codec">EUC-JP Text Codec</a></td><td >EUC-JP is a variable-width encoding used to represent the elements of three Japanese character set standards.</td><td >BSD-style</td><td ></td></tr>
<tr valign="top" class="even"><td ><a href="3rdparty.html#euc-kr-textcodec">EUC-KR TextCodec</a></td><td >Extended Unix Code (EUC) is a multibyte character encoding system used primarily for Japanese, Korean, and simplified Chinese.</td><td >BSD-style</td><td ></td></tr>
<tr valign="top" class="odd"><td ><a href="3rdparty.html#gbk-text-codec">GBK Text Codec</a></td><td >GBK is an extension of the GB2312 character set for simplified Chinese characters, used mainland China.</td><td >BSD-style</td><td ></td></tr>
<tr valign="top" class="even"><td ><a href="3rdparty.html#big5-text-codec">Big5 Text Codec</a></td><td >Big5, or BIG-5, is a Chinese character encoding method used for Traditional Chinese characters.</td><td >BSD-style</td><td ></td></tr>
<tr valign="top" class="odd"><td ><a href="3rdparty.html#tscii-text-codec">TSCII Text Codec</a></td><td >The TSCII codec provides conversion to and from the Tamil TSCII encoding.</td><td >BSD-style</td><td ></td></tr>
<tr valign="top" class="even"><td ><a href="3rdparty.html#stack-less-just-in-time-compiler">Stack-less Just-In-Time compiler</a></td><td >A platform-independent JIT compiler.</td><td >BSD</td><td ></td></tr>
<tr valign="top" class="odd"><td ><a href="licenses.html#parts-of-the-codecs-implemented-by-qt">Parts of the codecs implemented by Qt</a></td><td ></td><td >BSD</td><td ></td></tr>
<tr valign="top" class="even"><td ><a href="unicode.html#unicode">Unicode</a></td><td >Unicode character data.</td><td >Permissive, GPL-compatible</td><td ></td></tr>
<tr valign="top" class="odd"><td ><a href="licenses.html#macros-for-building-qt-files">Macros for building Qt files</a></td><td >Macros used in CMake files for building Qt.</td><td >BSD</td><td ></td></tr>
<tr valign="top" class="even"><td ><a href="licenses.html#the-pcre-library">The PCRE library</a></td><td >The PCRE library is a set of functions that implement regular expression pattern matching using the same syntax and semantics as Perl 5.</td><td >BSD-style</td><td ></td></tr>
<tr valign="top" class="odd"><td colspan="4"><b>Third-party Licenses</b></td></tr>
<tr valign="top" class="even"><td ><a href="android-runtime-licensing-notes.html">Android C++ Run-time</a></td><td >GNU C++ run-time library (libstdc++) for Android.</td><td >GPLv3 with exception</td><td ><a href="android-support.html">Qt for Android</a></td></tr>
<tr valign="top" class="odd"><td ><a href="3rdparty.html#forkfd">forkfd</a></td><td >A tool to facilitate spawning sub-processes.</td><td >MIT</td><td >Unix systems</td></tr>
<tr valign="top" class="even"><td ><a href="3rdparty.html#freebsd-strtoll-and-strtoull">FreeBSD strtoll and strtoull</a></td><td >Functions for converting a string to long long integer.</td><td >BSD</td><td ></td></tr>
<tr valign="top" class="odd"><td ><a href="3rdparty.html#md4-md4-cpp-and-md4-h">MD4</a></td><td >implements the MD4 message-digest algorithm.</td><td >BSD</td><td ></td></tr>
<tr valign="top" class="even"><td ><a href="3rdparty.html#md5-md5-cpp-and-md5-h">MD5</a></td><td >implements the MD5 message-digest algorithm.</td><td >BSD</td><td ></td></tr>
<tr valign="top" class="odd"><td ><a href="3rdparty.html#mesa-3d-graphics-library">Mesa llvmpipe</a></td><td >Mesa llvmpipe software rasterizer backend (<code>opengl32sw.dll</code>) for Windows builds.</td><td >MIT</td><td ><a href="windows-support.html">Qt for Windows</a></td></tr>
<tr valign="top" class="even"><td ><a href="3rdparty.html#sha-1-sha1-cpp">SHA-1</a></td><td >implements the SHA-1 encryption algorithm.</td><td >BSD</td><td ></td></tr>
<tr valign="top" class="odd"><td ><a href="3rdparty.html#sha-3-originally-known-as-keccak">SHA-3</a></td><td >implements the SHA-3 encryption algorithm.</td><td >BSD</td><td ></td></tr>
<tr valign="top" class="even"><td ><a href="3rdparty.html#data-compression-library-zlib-version-1-2-5">zlib</a></td><td >zlib is a general purpose data compression library.</td><td >BSD-style</td><td ></td></tr>
<tr valign="top" class="odd"><td ><a href="3rdparty.html#the-public-suffix-list">The Public Suffix List</a></td><td >A list of all known public Internet suffixes.</td><td >Mozilla Public License</td><td ></td></tr>
<tr valign="top" class="even"><td ></td><td ></td><td ></td><td ></td></tr>
<tr valign="top" class="odd"><td rowspan="12">Qt Gui</td></tr>
<tr valign="top" class="even"><td ><a href="licenses.html#qkeymapper-class-on-x11-platforms">QKeyMapper</a></td><td >Internal class for key mapping.</td><td >Custom, BSD-style</td><td ><a href="linux.html">Qt for Linux/X11</a></td></tr>
<tr valign="top" class="odd"><td ><a href="../qtgui/qimage.html#qimage-legalese">QImage</a></td><td >Code used for smooth scaling in <a href="../qtgui/qimage.html#transformed">QImage::transformed</a>().</td><td >BSD</td><td ></td></tr>
<tr valign="top" class="even"><td colspan="4"><b>Third-party Licenses</b></td></tr>
<tr valign="top" class="odd"><td ><a href="licenses.html#freetype">FreeType</a></td><td >Parts of <a href="qt-embedded-fonts.html#freetype">FreeType</a> project used in font rendering.</td><td >GPLv2, <a href="qt-embedded-fonts.html#freetype">FreeType</a> Project License</td><td ></td></tr>
<tr valign="top" class="even"><td ><a href="3rdparty.html#harfbuzz-harfbuzz">HarfBuzz</a></td><td >OpenType layout engine.</td><td >BSD-style</td><td ></td></tr>
<tr valign="top" class="odd"><td ><a href="3rdparty.html#freetype-2-freetype-version-2-3-12">FreeType 2</a></td><td >Parts of <a href="qt-embedded-fonts.html#freetype">FreeType</a> project used in font rendering.</td><td >GPLv2, <a href="qt-embedded-fonts.html#freetype">FreeType</a> Project License</td><td ></td></tr>
<tr valign="top" class="even"><td ><a href="3rdparty.html#png-reference-library-libpng-version-1-6-17">PNG Reference Library</a></td><td >A library for reducing the time and effort it takes to support the PNG format.</td><td >BSD-style</td><td ></td></tr>
<tr valign="top" class="odd"><td ><a href="3rdparty.html#pixman-pixman-version-0-17-11">Pixman</a></td><td >Pixman is a library that provides low-level pixel manipulation features such as image compositing and trapezoid rasterization.</td><td >BSD-style</td><td ></td></tr>
<tr valign="top" class="even"><td ><a href="3rdparty.html#drag-and-drop">Drag and Drop</a></td><td >Allows users to transfer information between and within applications.</td><td >BSD-style</td><td ></td></tr>
<tr valign="top" class="odd"><td ><a href="3rdparty.html#angle-angle">ANGLE</a></td><td >Opensource project to map OpenGL ES API calls to DirectX API.</td><td >BSD-style</td><td ><a href="windows-support.html">Qt for Windows</a></td></tr>
<tr valign="top" class="even"><td ></td><td ></td><td ></td><td ></td></tr>
<tr valign="top" class="odd"><td rowspan="4">Qt Location</td></tr>
<tr valign="top" class="even"><td colspan="4"><b>Third-party Licenses</b></td></tr>
<tr valign="top" class="odd"><td ><a href="3rdparty.html#poly2tri">Poly2Tri</a></td><td ><a href="3rdparty.html#poly2tri">Poly2Tri</a> is a sweepline constrained Delaunay Polygon Triangulation Library.</td><td >BSD-style</td><td ></td></tr>
<tr valign="top" class="even"><td ></td><td ></td><td ></td><td ></td></tr>
<tr valign="top" class="odd"><td rowspan="4">Qt Multimedia</td></tr>
<tr valign="top" class="even"><td colspan="4"><b>Third-party Licenses</b></td></tr>
<tr valign="top" class="odd"><td ><a href="3rdparty.html#fftreal-version-2-11">FFTReal</a></td><td >Fast Fourier transform of real-valued arrays.</td><td >LGPL</td><td >(Used in example code).</td></tr>
<tr valign="top" class="even"><td ></td><td ></td><td ></td><td ></td></tr>
<tr valign="top" class="odd"><td rowspan="6">Qt Canvas 3D</td></tr>
<tr valign="top" class="even"><td ><a href="lgpl.html">GNU Lesser General Public License (LGPL)</a> version 3</td><td ></td><td >LGPL v3</td><td ></td></tr>
<tr valign="top" class="odd"><td colspan="4"><b>Third-party Licenses</b></td></tr>
<tr valign="top" class="even"><td ><a href="3rdparty.html#three-js-loader">Three.js Loader</a></td><td >A parser for loading 3D models from JSON data structures.</td><td >MIT</td><td >(Used in example code).</td></tr>
<tr valign="top" class="odd"><td ><a href="3rdparty.html#gl-matrix-js-version-2-2-2">gl-matrix.js</a></td><td >High performance matrix and vector operations</td><td >MIT</td><td >(Used in example code).</td></tr>
<tr valign="top" class="even"><td ></td><td ></td><td ></td><td ></td></tr>
<tr valign="top" class="odd"><td rowspan="4">Qt SVG</td></tr>
<tr valign="top" class="even"><td ><a href="../qtsvg/qtsvglicense.html">Qt SVG License Information</a></td><td >Parts of code for arc handling in Qt SVG module.</td><td >BSD-style</td><td >Depends on Qt Gui, Qt Widgets</td></tr>
<tr valign="top" class="odd"><td ></td><td ></td><td ></td><td ></td></tr>
<tr valign="top" class="even"><td ></td><td ></td><td ></td><td ></td></tr>
<tr valign="top" class="odd"><td rowspan="4">Qt Quick</td></tr>
<tr valign="top" class="even"><td colspan="4"><b>Third-party Licenses</b></td></tr>
<tr valign="top" class="odd"><td ><a href="3rdparty.html#easing-equations">Easing Equations</a></td><td >Easing Equations is a collection of swappable functions that add flavor to motion.</td><td >BSD-style</td><td >Depends on Qt QML, Qt Gui, Qt Network</td></tr>
<tr valign="top" class="even"><td ></td><td ></td><td ></td><td ></td></tr>
<tr valign="top" class="odd"><td rowspan="4">Qt Quick Controls</td></tr>
<tr valign="top" class="even"><td ><a href="licenses.html#native-style-for-android">Native Style for Android</a></td><td ></td><td >Apache License 2.0</td><td ><a href="android-support.html">Qt for Android</a></td></tr>
<tr valign="top" class="odd"><td ></td><td ></td><td ></td><td ></td></tr>
<tr valign="top" class="even"><td ></td><td ></td><td ></td><td ></td></tr>
<tr valign="top" class="odd"><td rowspan="6">Qt Script</td><td ></td><td ></td><td ></td><td >(Provided for Qt 4 compatibility)</td></tr>
<tr valign="top" class="even"><td ><a href="licenses.html#v8-benchmark-tests">V8 benchmark tests</a></td><td >V8 benchmark tests used in Qt Script.</td><td >BSD-style</td><td ></td></tr>
<tr valign="top" class="odd"><td ><a href="licenses.html#sunspider-benchmark-tests">Sunspider benchmark tests</a></td><td >Sunspider benchmark tests used in Qt Script.</td><td >BSD-style</td><td ></td></tr>
<tr valign="top" class="even"><td colspan="4"><b>Third-party Licenses</b></td></tr>
<tr valign="top" class="odd"><td ><a href="3rdparty.html#javascriptcore">JavaScriptCore</a></td><td ></td><td >LGPL v2</td><td ></td></tr>
<tr valign="top" class="even"><td ></td><td ></td><td ></td><td ></td></tr>
<tr valign="top" class="odd"><td rowspan="8">Qt Test</td></tr>
<tr valign="top" class="even"><td ><a href="licenses.html#testlib">Testlib</a></td><td >Parts of implementation of Qt Test library.</td><td >BSD, MIT</td><td ></td></tr>
<tr valign="top" class="odd"><td colspan="4"><b>Third-party Licenses</b></td></tr>
<tr valign="top" class="even"><td ><a href="3rdparty.html#valgrind">Valgrind</a></td><td >A code analysis tool for detecting memory leaks.</td><td >GPL v2</td><td ></td></tr>
<tr valign="top" class="odd"><td ><a href="3rdparty.html#valgrind-h-specific-license">valgrind.h specific license</a></td><td ></td><td >BSD-style</td><td ></td></tr>
<tr valign="top" class="even"><td ><a href="3rdparty.html#callgrind">Callgrind</a></td><td >A performance profiling tool.</td><td >GPL v2</td><td ></td></tr>
<tr valign="top" class="odd"><td ></td><td ></td><td ></td><td ></td></tr>
<tr valign="top" class="even"><td ></td><td ></td><td ></td><td ></td></tr>
<tr valign="top" class="odd"><td rowspan="4">Qt Print Support</td><td ></td><td ></td><td ></td><td >Depends on Qt Gui and Qt Widgets</td></tr>
<tr valign="top" class="even"><td ><a href="../qtprintsupport/pdf-licensing.html">PDF Licensing</a></td><td >Notes about PDF Licensing.</td><td ></td><td ></td></tr>
<tr valign="top" class="odd"><td ></td><td ></td><td ></td><td ></td></tr>
<tr valign="top" class="even"><td ></td><td ></td><td ></td><td ></td></tr>
<tr valign="top" class="odd"><td rowspan="4">Qt Wayland</td></tr>
<tr valign="top" class="even"><td ><a href="3rdparty.html#wayland-protocol">Wayland Protocol</a></td><td ></td><td >MIT</td><td ></td></tr>
<tr valign="top" class="odd"><td ></td><td ></td><td ></td><td ></td></tr>
<tr valign="top" class="even"><td ></td><td ></td><td ></td><td ></td></tr>
<tr valign="top" class="odd"><td rowspan="4">Qt WebEngine</td></tr>
<tr valign="top" class="even"><td >License information</td><td ></td><td >LGPL v3 or<br />
LGPL v2.1 + Qt commercial license</td><td ></td></tr>
<tr valign="top" class="odd"><td ></td><td ></td><td ></td><td ></td></tr>
<tr valign="top" class="even"><td ></td><td ></td><td ></td><td ></td></tr>
<tr valign="top" class="odd"><td rowspan="6">Qt WebKit</td></tr>
<tr valign="top" class="even"><td ><a href="licenses.html#webkit-used-by-the-qtwebkit-module">WebKit used by the QtWebKit module</a></td><td >Parts of WebKit used by the <a href="../qtwebkit/qtwebkit-qmlmodule.html">QtWebKit</a> module</td><td >BSD-style</td><td >Depends on Qt Gui, Qt Network, Qt SQL, Qt QML, and Qt Quick</td></tr>
<tr valign="top" class="odd"><td colspan="4"><b>Third-party Licenses</b></td></tr>
<tr valign="top" class="even"><td ><a href="3rdparty.html#webcore-webkit">WebCore</a></td><td >A layout, rendering, and Document Object Model (DOM) library for HTML and SVG.</td><td >LGPL, MIT, BSD-style</td><td ></td></tr>
<tr valign="top" class="odd"><td ></td><td ></td><td ></td><td ></td></tr>
<tr valign="top" class="even"><td ></td><td ></td><td ></td><td ></td></tr>
<tr valign="top" class="odd"><td rowspan="4">Qt Designer</td></tr>
<tr valign="top" class="even"><td ><a href="../qtdesigner/designer-license-information.html">Qt Designer License Information</a></td><td >Implementation of the recursive shadow casting algorithm in Qt Designer.</td><td >BSD (MIT)</td><td ></td></tr>
<tr valign="top" class="odd"><td ></td><td ></td><td ></td><td ></td></tr>
<tr valign="top" class="even"><td ></td><td ></td><td ></td><td ></td></tr>
<tr valign="top" class="odd"><td rowspan="4">Qt Creator</td></tr>
<tr valign="top" class="even"><td colspan="4"><b>Third-party Licenses</b></td></tr>
<tr valign="top" class="odd"><td ><a href="3rdparty.html#botan-version-1-8-8">Botan</a></td><td >A C++ crypto library used in Qt Creator.</td><td >BSD</td><td ></td></tr>
<tr valign="top" class="even"><td ></td><td ></td><td ></td><td ></td></tr>
<tr valign="top" class="odd"><td rowspan="6">Qt Image Formats</td></tr>
<tr valign="top" class="even"><td colspan="4"><b>Third-party Licenses</b></td></tr>
<tr valign="top" class="odd"><td ><a href="3rdparty.html#jasper-libjasper-version-2-0">JasPer</a></td><td >A collection of software for the coding and manipulation of images.</td><td >BSD-style</td><td ></td></tr>
<tr valign="top" class="even"><td ><a href="3rdparty.html#tiff-software-distribution-libtiff-version-3-9-2">TIFF</a></td><td >libtiff is a set of C functions (a library) that support the manipulation of TIFF image files.</td><td >BSD</td><td ></td></tr>
<tr valign="top" class="odd"><td ><a href="3rdparty.html#mng-library-libmng-version-1-0-10">MNG</a></td><td >Support decoding and displaying of MNG format image files.</td><td >BSD-style</td><td ></td></tr>
<tr valign="top" class="even"><td ><a href="3rdparty.html#webp-libwebp-version-0-4-3">WebP</a></td><td >Support decoding and displaying of WebP format image files.</td><td >BSD-style</td><td ></td></tr>
<tr valign="top" class="odd"><td ></td><td ></td><td ></td><td ></td></tr>
<tr valign="top" class="even"><td ></td><td ></td><td ></td><td ></td></tr>
<tr valign="top" class="odd"><td rowspan="4">Qt SQL</td></tr>
<tr valign="top" class="even"><td ><a href="3rdparty.html#sqlite-sqlite-version-3-8-5-0">SQLite</a></td><td >A C library that implements a self-contained, embeddable, zero-configuration SQL database engine.</td><td >BSD-style</td><td ></td></tr>
<tr valign="top" class="odd"><td ></td><td ></td><td ></td><td ></td></tr>
<tr valign="top" class="even"><td ></td><td ></td><td ></td><td ></td></tr>
<tr valign="top" class="odd"><td rowspan="4">Qt XML Patterns</td></tr>
<tr valign="top" class="even"><td ><a href="3rdparty.html#bison-parser-2-3a">Bison Parser</a></td><td >Bison is a parser generator.</td><td >GPL with exception</td><td >Depends on Qt Network</td></tr>
<tr valign="top" class="odd"><td ></td><td ></td><td ></td><td ></td></tr>
<tr valign="top" class="even"><td ></td><td ></td><td ></td><td ></td></tr>
<tr valign="top" class="odd"><td rowspan="10">Plugins</td></tr>
<tr valign="top" class="even"><td ><a href="3rdparty.html#jpeg-software-libjpeg-version-8c">JPEG</a></td><td >C software to implement JPEG image compression and decompression.</td><td >BSD-style</td><td ></td></tr>
<tr valign="top" class="odd"><td ><a href="3rdparty.html#iaccessible2-idl-specification">IAccessible2</a></td><td >An accessibility API for Microsoft Windows applications.</td><td >BSD</td><td ><a href="windows-support.html">Qt for Windows</a></td></tr>
<tr valign="top" class="even"><td ><a href="3rdparty.html#cycle">Cycle</a></td><td >A CPU tick counter.</td><td >MIT</td><td ></td></tr>
<tr valign="top" class="odd"><td ><a href="3rdparty.html#callgrind-h-specific-license">callgrind.h specific license</a></td><td ></td><td >BSD-style</td><td ></td></tr>
<tr valign="top" class="even"><td ><a href="3rdparty.html#xcb">xcb</a></td><td >A C language binding for the X Window System.</td><td >BSD-style</td><td ><a href="linux.html">Qt for Linux/X11</a></td></tr>
<tr valign="top" class="odd"><td ><a href="3rdparty.html#at-spi-and-at-spi2">at-spi and at-spi2</a></td><td >A toolkit-neutral way of providing accessibility facilities in application.</td><td >LGPL</td><td ><a href="linux.html">Qt for Linux/X11</a></td></tr>
<tr valign="top" class="even"><td ><a href="3rdparty.html#xkbcommon">xkbcommon</a></td><td >Keymap handling library for toolkits and window systems.</td><td >BSD-style</td><td ><a href="linux.html">Qt for Linux/X11</a></td></tr>
<tr valign="top" class="odd"><td ></td><td ></td><td ></td><td ></td></tr>
<tr valign="top" class="even"><td ></td><td ></td><td ></td><td ></td></tr>
<tr valign="top" class="odd"><td rowspan="3">Qt Tools</td></tr>
<tr valign="top" class="even"><td colspan="4"><b>Third-party Licenses</b></td></tr>
<tr valign="top" class="odd"><td ><a href="3rdparty.html#clucene-core-library">Clucene Core Library</a></td><td >A high-performance, full-featured text search engine written in C++.</td><td >LGPL/Apache</td><td ></td></tr>
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<h4 >Additional information</h4>
<p>The documents below list related documents, such as information about Trademark and other licenses used in parts of Qt.</p>
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<tr class="odd topAlign"><td class="tblName"><p><a href="android-runtime-licensing-notes.html">Android GNU C++ Run-time Licensing</a></p></td><td class="tblDescr"><p>Provides additional information about the licensing of run-time dependencies of Qt for Android</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="mac-licensing.html">Contributions to the Cocoa Platform Plugin Files</a></p></td><td class="tblDescr"><p>License information for contributions by Apple, Inc. to specific parts of the Qt for OS X Cocoa port.</p></td></tr>
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<tr class="even topAlign"><td class="tblName"><p><a href="../qtprintsupport/pdf-licensing.html">Notes about PDF Licensing</a></p></td><td class="tblDescr"><p>Details of restrictions on the use of PDF-related trademarks</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="opensourcelicense.html">Open Source Licensing of Qt</a></p></td><td class="tblDescr"><p>Information about open source licensing of Qt.</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="../qtsvg/qtsvglicense.html">Qt SVG License Information</a></p></td><td class="tblDescr"><p>License information for Qt SVG</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="qtmain.html">The qtmain Library</a></p></td><td class="tblDescr"><p>Describes the use and license of the qtmain helper library.</p></td></tr>
<tr class="even topAlign"><td class="tblName"><p><a href="3rdparty.html">Third-Party Licenses Used in Qt</a></p></td><td class="tblDescr"><p>License information for third-party libraries supplied with Qt.</p></td></tr>
<tr class="odd topAlign"><td class="tblName"><p><a href="trademarks.html">Trademarks</a></p></td><td class="tblDescr"><p>Information about trademarks owned by The Qt Company and other organizations.</p></td></tr>
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