Copyleft licence i slobodni software

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CC Bugarska http://creativecommons.org/worldwide/bg

CC Hrvatska http://creativecommons.org/worldwide/hr

CC Slovenija http://creativecommons.org/worldwide/si

CC Srbija http://creativecommons.org.yu

Creative commons http://creativecommons.org

DRUPAL, slobodni software za online objavljivanje http://drupal.org

Mreža za slobodni software Srbija http://www.fsnserbia.org

SPIP, slobodni software za online objavljivanje http://www.spip.net

What is Copyleft? http://www.gnu.org/copyleft