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Proprietary software is a subset of non-free software, a term defined in contrast to free and open-source software; non-commercial licenses such as CC BY-NC are not deemed proprietary, but are non-free. Proprietary software may either be closed-source software or source-available software. [1] [2]
While such software often later becomes open source software or public domain, other constructs and software licenses exist, for instance shared source or creative commons licenses. If the source code is given out without specified license or public domain waiver it has legally to be considered as still proprietary due to the Berne Convention.
Proprietary software licenses A brief, written-out beta test software license issued by Macromedia in 1995. The tendency to license proprietary software, rather than sell it, dates from the time period before the existence, then the scope of software copyright protection was clear.
This is a list of notable software packages which were published under a proprietary software license but later released as free and open-source software, or into the public domain. In some cases, the company continues to publish proprietary releases alongside the non-proprietary version.
The Open Source Initiative (OSI) is one such organization keeping a list of open-source licenses. [1] The Free Software Foundation (FSF) maintains a list of what it considers free. [2] FSF's free software and OSI's open-source licenses together are called FOSS licenses. There are licenses accepted by the OSI which are not free as per the Free ...
Traditional, proprietary software licenses are written with the goal of increasing profit, but Stallman wrote the GPL to increase the body of available free software. His reciprocal licenses offer the rights to use, modify, and distribute the work on the condition that people must release derivative works under a license offering these same ...
A license, whether providing open-source code or not, that does not stipulate the "four software freedoms", [3] are not considered "free" by the free software movement. A closed source license is one that limits only the availability of the source code. By contrast a copyleft license claims to protect the "four software freedoms" by explicitly ...
List of formerly open-source or free software. This is a list of notable software packages which were published as free and open-source software, or into the public domain, but were made proprietary software, or otherwise switched to a license (including source-available licenses) that is not considered to be free and open source.
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