Last time I checked, Creative Commons had their own search for things under their licenses. But now apparently that project got transferred to WordPress and is

Last time I checked, Creative Commons had their own search for things under their licenses. But now apparently that project got transferred to WordPress and is now named Openverse: https://wordpress.org/openverse/?referrer=creativecommons.org https://wordpress.org/openverse/?referrer=creativecommons.or... Anyways, I'd argue that's the most comprehensive database of CC-licensed works.