CC-BY-SA

CC-BY-SA is short for Creative Commons Attribution ShareAlike licence.

Creative Commons licenses are several copyright licenses that allow the distribution of copyrighted works. The licenses differ by several combinations that condition the terms of distribution. They were initially released on December 16, 2002 by Creative Commons, a U.S. non-profit corporation founded in 2001.

As of September, 2010, Creative Commons licenses have been "ported" to 53 different jurisdictions worldwide, with 8 others under development.