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Free licenses are a popular subset of public copyright licenses. They include free and open source software licenses and free content licenses. To qualify as a libre license, a public copyright license must allow licensees to share and adapt the licensed work for any purpose, including commercial ones.
Common examples of free licenses are the GNU General Public License, BSD licenses and some Creative Commons licenses. Founded in 2001 by James Boyle , Lawrence Lessig , and Hal Abelson , the Creative Commons (CC) is a non-profit organization [ 93 ] which aims to facilitate the legal sharing of creative works.
The author, or the licensor in case the author did a contractual transfer of rights, needs to have the exclusive rights on the work. If the work has already been published under a public license, it can be uploaded by any third party, once more on another platform, by using a compatible license, and making reference and attribution to the original license (e.g. by referring to the URL of the ...
This is an accepted version of this page This is the latest accepted revision, reviewed on 26 February 2025. Organization creating copyright licenses for the public release of creative works This article is about the organization. For their eponymous licenses, see Creative Commons license. For usage of product, see List of major Creative Commons licensed works. Creative Commons Creative ...
An alternative is for copyright holders to issue a license which irrevocably grants as many rights as possible to the general public. Real public domain makes licenses unnecessary, as no owner/author is required to grant permission ("Permission culture"). There are multiple licenses which aim to release works into the public domain.
Nonexclusive licenses need not be in writing and they may be implied by the circumstances. Transfers of copyright always involve one or more of the exclusive rights of copyright. For instance, a license may provide a right to perform a work, but not to reproduce it or to prepare a derivative work (adaptation right). [33]
Free-software licenses that use "weak" copyleft include the GNU Lesser General Public License and the Mozilla Public License. The GNU General Public License is an example of a license implementing strong copyleft. An even stronger copyleft license is the AGPL, which requires the publishing of the source code for software as a service use cases.
Creative Commons license symbol for attribution. Attribution, in copyright law, is acknowledgment as credit to the copyright holder or author of a work. If a work is under copyright, there is a long tradition of the author requiring attribution while directly quoting portions of work created by that author. [1] [2]
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