| 1 | /****************************************************************************
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| 2 | **
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| 3 | ** Copyright (C) 2011 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 | ** $QT_BEGIN_LICENSE:FDL$
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| 10 | ** Commercial Usage
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| 11 | ** Licensees holding valid Qt Commercial licenses may use this file in
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| 12 | ** accordance with the Qt Commercial License Agreement provided with the
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| 13 | ** Software or, alternatively, in accordance with the terms contained in a
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| 14 | ** written agreement between you and Nokia.
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| 15 | **
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| 16 | ** GNU Free Documentation License
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| 17 | ** Alternatively, this file may be used under the terms of the GNU Free
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| 18 | ** Documentation License version 1.3 as published by the Free Software
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| 19 | ** Foundation and appearing in the file included in the packaging of this
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| 20 | ** file.
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| 21 | **
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| 22 | ** If you have questions regarding the use of this file, please contact
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| 23 | ** Nokia at qt-info@nokia.com.
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| 24 | ** $QT_END_LICENSE$
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| 25 | **
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| 26 | ****************************************************************************/
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| 27 |
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| 28 | /*!
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| 29 | \page opensourceedition.html
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| 30 |
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| 31 | \title Open Source Versions of Qt
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| 32 | \ingroup licensing
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| 33 | \brief Information about the license and features of the Open Source Edition.
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| 34 |
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| 35 | Free and Open Source Software (FOSS) is software that comes with a license
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| 36 | that gives users certain rights. In particular the right to use the
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| 37 | software, to modify it, to obtain its source, and to pass it on (under
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| 38 | the same terms). Notice that the term "free" is about rights, not
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| 39 | money. The Free Software Foundation, the creator of the GNU GPL, speaks
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| 40 | of free in this context as in "free speech", not as in "no cost".
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| 41 |
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| 42 | Nokia supports the free software concept by providing the Qt Open Source
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| 43 | Edition, which is licensed under the \l{GNU General Public License (GPL)}
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| 44 | (version 3) and the \l{GNU Lesser General Public License (LGPL)} (version 2.1).
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| 45 | You can use this edition of Qt to create and distribute software with licenses
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| 46 | that are compatible with these free software licenses.
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| 47 |
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| 48 | Additionally, the \l{Qt Examples}{examples} included with Qt are provided under
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| 49 | the terms of the \l{New and Modified BSD Licenses}{Modified BSD License}.
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| 50 |
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| 51 | The support of open source with the Open Source Versions of Qt has enabled large
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| 52 | successful software projects like KDE to thrive, with thousands of developers
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| 53 | around the world using open source versions of Qt at no cost to themselves. With
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| 54 | the release of Qt 4, open source versions of Qt became available for Unix/X11,
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| 55 | Mac OS X, and Windows platforms.
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| 56 |
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| 57 | The Open Source Edition can be downloaded from the \l{Downloads}{Qt website}.
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| 58 |
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| 59 | Please refer to the online \l{License FAQ} for answers to frequently asked
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| 60 | questions on open source licensing and its implications.
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| 61 |
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| 62 | More information on Free and Open Source software is available online:
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| 63 |
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| 64 | \list
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| 65 | \o GNU GPL, GNU LGPL: \l http://www.gnu.org/
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| 66 | \o Open Source licensing: \l http://www.opensource.org/
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| 67 | \endlist
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| 68 |
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| 69 | See \l{Licensing Information} for a collection of documents about licenses
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| 70 | used in Qt.
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| 71 |
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| 72 | Information about Qt Commercial License Agreements is available
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| 73 | in the \l{Qt Licensing Overview} on the Qt website or by contacting
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| 74 | the sales department at http://qt.nokia.com/contact.
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| 75 |
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| 76 | If you are in doubt what edition of Qt is right for your project,
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| 77 | please contact \l{mailto:qt-info@nokia.com}{qt-info@nokia.com}.
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| 78 | */
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