47 lines
2.0 KiB
Plaintext
Executable File
47 lines
2.0 KiB
Plaintext
Executable File
THIS IS THE OPEN SOURCE VERSION OF PyQt, RELEASED UNDER THE GPL
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LICENSE. PLEASE READ THIS FILE TO FIND OUT WHAT THAT MEANS TO YOU.
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INTRODUCTION
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============
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PyQt is licensed under two licenses: the GNU General Public License
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(GPL) and a commercial license. You are currently using the Open
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Source (GPL) version of PyQt. This file explains the principle of dual
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licensing, and which obligations using the GPL version of PyQt implies.
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ABOUT DUAL LICENSING
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====================
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Dual Licensing is based on the principle of Quid Pro Quo - something
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for something. If you, your company or your organization derive
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commercial benefit from Riverbank's products and do not wish to
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release your complete source code, you are required to purchase the
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appropriate number of commercial licenses.
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Alternatively, if you are willing to follow the terms of the GPL
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(General Public License), Riverbank software is available to you under
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Open Source licenses which allows you to develop, modify and
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distribute your software freely. If you wish to use an open source
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version of Riverbank's products, you must contribute all your source
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code to the open source community, according to the terms of the
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applicable open source license.
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By offering both open source and commercial licenses, Riverbank
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ensures the availability of resources for ongoing development and
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improvement of PyQt. By purchasing commercial licenses, you are no
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longer obligated to publish your source code.
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COMMERCIAL AND OPEN SOURCE LICENSES
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===================================
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Riverbanks's Commercial licenses allow customers to develop, use and
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distribute their applications under standard commercial terms.
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Riverbanks's Open Source versions are available under the terms of the
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GPL - General Public License. The main obligation for software
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development under the GPL is that anyone using your PyQt-based software
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must have access to the complete source code, and must be able to
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modify and redistribute that software to anyone free of charge.
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