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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.
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. [1] [2] 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 ...
Diagram of software under various licenses according to the FSF and their The Free Software Definition: on the left side "free software", on the right side "proprietary software". On both sides, and therefore mostly orthogonal, "free download" . A software license is a legal instrument governing the use or redistribution of software.
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.
This table lists for each license what organizations from the FOSS community have approved it – be it as a "free software" or as an "open source" license – , how those organizations categorize it, and the license compatibility between them for a combined or mixed derivative work. Organizations usually approve specific versions of software ...
License compatibility is a legal framework that allows for pieces of software with different software licenses to be distributed together. The need for such a framework arises because the different licenses can contain contradictory requirements, rendering it impossible to legally combine source code from separately-licensed software in order to create and publish a new program.
Under a FOSS business model, software vendors may charge a fee for distribution [4] and offer paid support and software customization services. Proprietary software uses a different business model, where a customer of the proprietary software pays a fee for a license to use the 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.