Kopfschlag is a collective and anonymous internet-based project created by an anonymous team. The online visitors are part of it by drawing, writing, erasing and sharing their artworks on Kopfschlag's virtual wall, which can be defined as something between an etch a sketch and the exquisite corpse. Everything on this site is licensed under the Creative Commons Attribution license.
SOINUMAPA.NET is a Basque country Sound Map open archive project. Based on phonography or the art of recording environmental sounds, its aim is to show, share and exchange field recordings made in the Basque Country.
Jamendo is a music website and an open community of music authors. It bills itself as "the world's largest digital service for free music". Since the beginning in 2005, Jamendo's music has been licensed under Creative Commons licenses.