Q Public License
The Q Public License (QPL) is a non-copyleft license, created by Trolltech for its free edition of the Qt. It was used until Qt 3.0, as Trolltech toolkit version 4.0 was released under GPL version 2.
| Author | Trolltech |
|---|---|
| Latest version | 1.0 |
| Publisher | Trolltech AS |
| Published | 1999–2000 |
| SPDX identifier | QPL-1.0 |
| Debian FSG compatible | No |
| FSF approved | Yes |
| OSI approved | Yes |
| GPL compatible | No |
| Copyleft | No |
It fails the Debian Free Software Guidelines, used by several Linux distributions, though it qualifies for the Free Software Foundation's Free Software Definition; however, it is not compatible with the FSF's GNU General Public License, meaning that products derived from code under both the GPL and the QPL cannot be redistributed.
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