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# Licensing Information

These documents include information about Qt's licenses and the licenses of third party components used in Qt.

Contributions to the Following QtGui Files: qapplication_cocoa_p.h, qapplication_mac.mm, qdesktopwidget_mac.mm qeventdispatcher_mac.mm qeventdispatcher_mac_p.h qmacincludes_mac.h qt_cocoa_helpers.mm qt_cocoa_helpers_p.h qwidget_mac.mm qsystemtrayicon_mac.mm | License information for contributions by Apple, Inc. to specific parts of the Qt/Mac Cocoa port.
Contributions to the Following qt3to4 Files: treewalker.h, treedump.cpp, treedump.h, treewalker.cpp | License information for contributions to the qt3to4 source code.
Easing Equations by Robert Penner |
GNU General Public License (GPL) | About the GPL license used for Qt.
GNU Lesser General Public License (LGPL) | About the LGPL license used for Qt.
Implementation of the Recursive Shadow Casting Algorithm in Qt Designer | License information for contributions to specific parts of the Qt Designer source code.
Licenses for Fonts Used in Qt for Embedded Linux | Information about the licenses of fonts supplied with Qt for Embedded Linux.
Notes about PDF Licensing | Details of restrictions on the use of PDF-related trademarks.
Open Source Versions of Qt | Information about the license and features of the Open Source Edition.
Other Licenses Used in Qt | Information about other licenses used for Qt components and third-party code.
Qt Commercial Editions | Information about the license and features of the Commercial Edition.
Qt Editions | Information about the different editions of Qt.
Thanks! | A list of contributors to Qt.
The qtmain Library | Describes the use and license of the qtmain helper library.
Third-Party Licenses Used in Qt | License information for third-party libraries supplied with Qt.
Trademarks | Information about trademarks owned by Nokia and other organisations.