XScreenSaver - XScreenSaver is the standard screen saver collection shipped on most Linux and Unix systems running...
Fliqlo Screensaver - A screensaver that displays the time using a flip clock.
Clock.saver - A simple clock screensaver based on Braun watches ⌚
Gnome Screensaver - gnome-screensaver is a new screensaver that can replace xscreensaver.
Aerial - A beautiful aerial screensaver for your Mac
Really Slick Screensavers - Really Slick contains free 3D OpenGL screensavers.