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1 /**************************************************************************** |
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2 ** |
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3 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies). |
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4 ** All rights reserved. |
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5 ** Contact: Nokia Corporation (qt-info@nokia.com) |
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6 ** |
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7 ** This file is part of the documentation of the Qt Toolkit. |
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8 ** |
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9 ** $QT_BEGIN_LICENSE:LGPL$ |
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10 ** No Commercial Usage |
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11 ** This file contains pre-release code and may not be distributed. |
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12 ** You may use this file in accordance with the terms and conditions |
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13 ** contained in the Technology Preview License Agreement accompanying |
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14 ** this package. |
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15 ** |
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16 ** GNU Lesser General Public License Usage |
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17 ** Alternatively, this file may be used under the terms of the GNU Lesser |
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18 ** General Public License version 2.1 as published by the Free Software |
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19 ** Foundation and appearing in the file LICENSE.LGPL included in the |
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20 ** packaging of this file. Please review the following information to |
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21 ** ensure the GNU Lesser General Public License version 2.1 requirements |
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22 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. |
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23 ** |
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24 ** In addition, as a special exception, Nokia gives you certain additional |
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25 ** rights. These rights are described in the Nokia Qt LGPL Exception |
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26 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. |
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27 ** |
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28 ** If you have questions regarding the use of this file, please contact |
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29 ** Nokia at qt-info@nokia.com. |
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30 ** |
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31 ** |
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32 ** |
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33 ** |
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34 ** |
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35 ** |
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36 ** |
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37 ** |
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38 ** $QT_END_LICENSE$ |
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39 ** |
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40 ****************************************************************************/ |
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41 |
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42 /*! |
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43 \page opensourceedition.html |
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44 |
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45 \title Open Source Versions of Qt |
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46 \ingroup licensing |
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47 \brief Information about the license and features of the Open Source Edition. |
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48 |
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49 Free (or open source) software is software that comes with a license |
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50 that gives users certain rights. In particular the right to use the |
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51 software, to modify it, to obtain its source, and to pass it on (under |
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52 the same terms). Notice that the term "free" is about rights, not |
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53 money. The Free Software Foundation (creators of the GNU GPL) speaks |
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54 of free in this context as in "free speech", not as in "no cost". |
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55 |
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56 Nokia supports the free software concept by providing the Qt Open Source |
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57 Edition, which is licensed under the \l{GNU General Public License (GPL)} |
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58 (version 3) and the \l{GNU Lesser General Public License (LGPL)} (version 2.1). |
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59 You can use this edition of Qt to create and distribute software with licenses |
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60 that are compatible to these free software licenses. |
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61 |
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62 The support of open source with the Open Source Versions of Qt has enabled large |
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63 successful software projects like KDE to thrive, with thousands of developers |
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64 around the world using open source versions of Qt at no cost to themselves. With |
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65 the release of Qt 4, open source versions of Qt became available for Unix/X11, |
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66 Mac OS X, and Windows platforms. |
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67 |
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68 The Open Source Edition can be downloaded from the \l{Downloads}{Qt website}. |
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69 |
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70 Please refer to the online \l{License FAQ} for answers to frequently asked |
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71 questions on open source licensing and its implications. |
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72 |
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73 More information on Free and Open Source software is available online: |
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74 |
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75 \list |
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76 \o GNU GPL: \l http://www.gnu.org/. |
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77 \o Open Source licensing: \l http://www.opensource.org/. |
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78 \endlist |
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79 |
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80 See \l{Licensing Information} for a collection of documents about licenses |
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81 used in Qt. |
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82 |
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83 Information about Qt Commercial License Agreements is available |
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84 in the \l{Qt Licensing Overview} on the Qt website or by contacting |
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85 the sales department at http://qt.nokia.com/contact. |
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86 |
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87 If you are in doubt what edition of Qt is right for your project, |
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88 please contact |
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89 \l{mailto:qt-info@nokia.com}{qt-info@nokia.com}. |
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90 |
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91 */ |