Share-alike

Share-alike

Share-alike is a descriptive term used in the Creative Commons project for copyright licenses which include certain copyleft provisions.

The specific definition used by Creative Commons is that "If you alter, transform, or build upon this work, you may distribute the resulting work only under the same, similar or a compatible license." However, generic variations of share-alike licenses define free software and open content. The term "copyleft" has been used since the 80s to describe these terms by the free software community, but only as far as free licenses are concerned.

*The GNU Project's General Public License (GPL) and Free Documentation License (GFDL) are similar to share-alike licenses.
*The Creative Commons suite of licenses includes a wider range of share-alike licenses which are denoted usually as "-sa" licenses, e.g.
**CC-by-sa, which requires attribution and is similar but incompatible to the GFDL
**CC-by-nc-sa, which requires non-commercial use only is share-alike but is not free content, and thus cannot be considered a Copyleft license.

By contrast, there are also many permissive free software licences which do not require share-alike terms to be applied, thus permitting users to make modifications and improvements and apply a modified and more restrictive license.

ee also

*FairShare
*File sharing
*Permissive and copyleft licences

External links

* [http://creativecommons.org/about/licenses/ Creative Commons licenses explained]


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  • Share-alike — Значок Creative Commons для Share alike, закрученный символ копилефта Share alike  описательный термин, используемый в проекте Creative Commons для копирайт лицензий, которые включают …   Википедия

  • share and share alike — index per capita Burton s Legal Thesaurus. William C. Burton. 2006 share and share alike v …   Law dictionary

  • Share and share alike — Share Share, n. [OE. share, AS. scearu, scaru, fr. sceran to shear, cut. See {Shear}, v.] 1. A certain quantity; a portion; a part; a division; as, a small share of prudence. [1913 Webster] 2. Especially, the part allotted or belonging to one, of …   The Collaborative International Dictionary of English

  • share and share alike — phrasal 1. : to be held in equal shares as tenants in common rather than in joint tenancy with a per capita rather than a per stirpes distribution or ownership 2. : to be distributed in severalty in equal shares * * * share and share alike 1.… …   Useful english dictionary

  • Share and share alike. — something that you say which means that it is good to share things fairly and equally. Come on now, don t keep them all to yourself share and share alike …   New idioms dictionary

  • share and share alike — Meaning Give equal shares to all. Origin From R. Edwards Damon and Pithias, 1566. Let vs into the Courte to parte the spoyle, share and share like …   Meaning and origin of phrases

  • share and share alike — have or receive an equal share. → share …   English new terms dictionary

  • share and share alike — spoken used for saying that it is best to share things equally and fairly …   English dictionary

  • Share alike — Das Copyleft Logo. Es ist ein an der Vertikalen gespiegeltes Copyright Zeichen (©), eines also, das nach links statt nach rechts geöffnet ist. Copyleft ist ein im Bereich des Urheberrechts verwendeter Begriff und ein Wortspiel mit dem englischen… …   Deutsch Wikipedia

  • share and share alike — (Roget s IV) modif. Syn. equally, fifty fifty*, shared …   English dictionary for students

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