See README to have general informations

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Licence for the source ================================
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All images into resources/ is extracted from the oxygen pack of KDE 4.8. Some are directly remaked from the png version.
*.ts and *.qm into resources/ or plugins/Languages/ is under GPL3.
All images into plugins/Languages/ are extracted from piwik.
All informations.xml into plugins/Languages/ are under GPL3.
All the file *.dox *.h *.cpp *.pro *.ui at the root, interface/ folder of the source are under GPL3.
The files: QTarDecode.cpp, QTarDecode.h, QXzDecode.cpp,
QXzDecode.h, QXzDecodeThread.cpp, QXzDecodeThread.h into: lib/qt-tar-xz/ are under GPL3.
The other file into lib/qt-tar-xz/ is XZ Embedded.
All *.qrc into resources/ are under GPL3.
See after for the patch.

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Licence for the patch =================================
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The patchs under this folder are under GPL3:
patch/opensource/
The patchs under this folder are under GPL3 but the binary is sell to support ultracopier. It's mainly for commercial/companie usage.
patch/comercial/

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Licensing of XZ Embedded =============================
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All the files in this package have been written by Lasse Collin
and/or Igor Pavlov. All these files have been put into the
public domain. You can do whatever you want with these files.
As usual, this software is provided "as is", without any warranty.