Google Art Palette - Unique color combinations, drawn from the world of art
Padbury Clock Screensaver - Minimal screensaver for Mac
Magnus - Shazam for art
XScreenSaver - XScreenSaver is the standard screen saver collection shipped on most Linux and Unix systems running...
Artsy - A global platform for discovering and collecting art.
Really Slick Screensavers - Really Slick contains free 3D OpenGL screensavers.