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In the freemium business model, business tiers start with a "free" tier. Freemium, a portmanteau of the words "free" and "premium", is a pricing strategy by which a basic product or service is provided free of charge, but money (a premium) is charged for additional features, services, or virtual (online) or physical (offline) goods that expand the functionality of the free version of the software.
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 ...
Unrestricted, public access to the source code —what the term open source refers to; Users may modify the software and release derivative works, either under the same terms as the free software or, in some cases, under a different license. Nondiscrimination between different uses, including commercial use.
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]
The subscription business model is a business model in which a customer must pay a recurring price at regular intervals for access to a product or service. The model was pioneered by publishers of books and periodicals in the 17th century, [1] and is now used by many businesses, websites [2] and even pharmaceutical companies in partnership with ...
Unlike with free and open-source software, which are also often distributed free of charge, the source code for freeware is typically not made available. [1] [3] [4] [5] Freeware may be intended to benefit its producer by, for example, encouraging sales of a more capable version, as in the freemium and shareware business models .
A code name, codename, call sign or cryptonym is a code word or name used, sometimes clandestinely, to refer to another name, word, project, or person. Code names are often used for military purposes, or in espionage. They may also be used in industrial counter-espionage to protect secret projects and the like from business rivals, or to give ...
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