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proprietary license On 16 August 2017, the source code of the game engine was made freely available under proprietary license terms via GitHub. [3] [4] Apple DOS: Apple Inc. 1986 2015 No No No non-commercial license The Apple DOS source code was released by the Computer History Museum [5] after Paul Laughton, the creator of the code, donated it ...
The Open Source Initiative defines a permissive software license as a "non-copyleft license that guarantees the freedoms to use, modify and redistribute". [6] GitHub's choosealicense website describes the permissive MIT license as "[letting] people do anything they want with your code as long as they provide attribution back to you and don't hold you liable."
In January 2021, the Elasticsearch project used such rights to move the project to a non-open-source license [6] arguing Amazon had been "misleading and confusing the community". Our license change is aimed at preventing companies from taking our Elasticsearch and Kibana products and providing them directly as a service without collaborating ...
Proprietary software vendors can prohibit the users from sharing the software with others. Another unique license is required for another party to use the software. In the case of proprietary software with source code available, the vendor may also prohibit customers from distributing their modifications to the source code.
Unlike copyleft software licenses, the MIT License also permits reuse within proprietary software, provided that all copies of the software or its substantial portions include a copy of the terms of the MIT License and also a copyright notice. [9] [10] In 2015, the MIT License was the most popular software license on GitHub. [11]
Software licensing agreements usually prohibit resale, enabling the company to maximize revenue. [20] Proprietary software is usually offered under a restrictive license that bans copying and reuse and often limits the purchaser to using the software on one computer. [21] [22] Source code is rarely available.
The ISC license is a permissive free software license published by the Internet Software Consortium, now called Internet Systems Consortium (ISC). It is functionally equivalent to the simplified BSD and MIT licenses, but without language deemed unnecessary following the Berne Convention .
An early example of an open-source project that did successfully re-license for license compatibility reasons is the Mozilla project and their Firefox browser. The source code of Netscape's Communicator 4.0 browser was originally released in 1998 under the Netscape Public License/Mozilla Public License [6] but was criticised by the FSF and OSI for being incompatible.