Apple Public Source License
|Published||August 6, 2003|
|SPDX identifier||APSL-1.0, APSL-1.1, APSL-1.2, APSL-2.0|
|Debian FSG compatible||No|
|FSF approved||Yes (Version 2.0, not versions 1.0, 1.1 and 1.2)|
|Linking from code with a different licence||Yes|
The Apple Public Source License (APSL) is the open-source and free software license under which Apple's Darwin operating system was released. A free and open-source software license was voluntarily adopted to further involve the community from which much of Darwin originated.
The first version of the Apple Public Source License was approved by the Open Source Initiative (OSI). Version 2.0, released July 29, 2003, is also approved as a free software license by the Free Software Foundation (FSF) which finds it acceptable for developers to work on projects that are already covered by this license. However, the FSF recommends that developers should not release new projects under this license, because the partial copyleft is not compatible with the GNU General Public License and allows linking with files released entirely as proprietary software. The license does require that if any derivatives of the original source are released externally, their source should be made available; the Free Software Foundation compares this requirement to a similar one in its own GNU Affero General Public License.
- "Apple Public Source License (APSL)". The Big DFSG-compatible Licenses. Debian Project. Retrieved January 27, 2017.
- "Apple Public Source License (APSL), version 2.x". Various Licenses and Comments about Them. Free Software Foundation. Archived from the original on July 16, 2009. Retrieved July 6, 2009.
- FSF website
- Raymond, Eric. "OSI clarifies the status of the APSL". Linux Weekly News. Retrieved February 14, 2013.
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