Google Arts & Culture - Explore collections of art and culture from around the world, both past and present.
Splashy - Breathtaking, auto changing wallpaper app for macOS, Windows, Linux, iOS & Android
Altamira - Altamira is a communal marketplace for art, artists, and their fans...
Splashify - Beautiful desktop wallpapers for Mac and Windows
Google Cultural Institute - Explore art, landmarks and exhibitions from around the world
Irvue - (previously Unsplash Wallpaper) Gorgeous wallpapers on your Mac.