Creative Commons has a new search engine available called Openverse.

This is the evolution of the old CC Search developed by Creative

Commons, which was taken over by WordPress, and now has further

evolved.

Links

https://openverse.org/

https://openverse.org/sources

https://make.wordpress.org/openverse/handbook/new-contributor-guide/

https://www.ahuka.com/a-search-engine-for-creative-commons-content/