Q Public License
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"QPL" redirects here. For the library system in New York, see Queens Public Library. For the airport in Australia, see Plutonic Airport.
The Q Public License (QPL) is a non-copyleft license, created by the company Trolltech for its free software edition of the Qt toolkit and framework. It was used until Qt 3.0, until version 4.0 was released under the Free Software Foundation's (FSF) GNU General Public License (GPL) version 2.
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Quick Facts Author, Latest version ...
Author | Trolltech AS |
---|---|
Latest version | 1.0 |
Publisher | Trolltech AS |
Published | 1999; 25 years ago (1999) |
SPDX identifier | QPL-1.0 |
Debian FSG compatible | No[1] |
FSF approved | Yes[2] |
OSI approved | Yes |
GPL compatible | No[2] |
Copyleft | No[2] |
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It fails the Debian Free Software Guidelines,[1] used by several Linux distributions, though it qualifies for the FSF's Free Software Definition; however, it is incompatible with the FSF's GPL,[2] meaning that products derived from code under both the GPL and the QPL cannot be redistributed.