Software license

Governs the use and/or redistribution of software / From Wikipedia, the free encyclopedia

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A software license is a legal instrument (usually by way of contract law, with or without printed material) governing the use or redistribution of software. Under United States copyright law, all software is copyright protected, in both source code and object code forms, unless that software was developed by the United States Government, in which case it cannot be copyrighted.[1] Authors of copyrighted software can donate their software to the public domain, in which case it is also not covered by copyright and, as a result, cannot be licensed.

A typical software license grants the licensee, typically an end-user, permission to use one or more copies of software in ways where such a use would otherwise potentially constitute copyright infringement of the software owner's exclusive rights under copyright.

Table info: , Free and open, Non-free, , Public domain...
Free and open Non-free
Public domainPermissive license (can be used in closed source s/w)Copyleft (protective license)Noncommercial licenseProprietary licenseTrade secret
Description Grants all rightsGrants use rights, including right to relicense (allows proprietization, license compatibility)Grants use rights, forbids proprietizationGrants rights for noncommercial use only. May be combined with copyleft.Traditional use of copyright; no rights need be grantedNo information made public
Software PD, CC0MIT, Apache, MPL, BSDGPL, AGPLJRL, AFPLProprietary software, no public licenseprivate, internal software
Other creative works PD, CC0CC BYCC BY-SACC BY-NCCopyright, no public licenseunpublished

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