Consider the Creative Commons license which allows people to say how they would be willing to share some piece of content of theirs.

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Because the album has been released under a creative commons license, others are free to remix or build upon Neely's work for noncommercial purposes.

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The picture is licensed under the Creative Commons License 3.0.

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Offers certification for journals choosing the CC-BY license (Creative Commons) and provide DOAJ with metadata on article level.

UNESCO: Global Open Access Portal

Open Educational Resources are teaching, learning or research materials that are in the public domain and released with an open license (such as Creative Commons).

UNESCO: MEDIA SERVICES

Kosta Peric is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.

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