Screen Savers
Screen savers display images or animations when a computer is idle, and some also lock the screen. XScreenSaver provides a collection of modular screen displays and configuration tools for X11. GNOME Screensaver integrates the idle display and locking controls with the GNOME desktop. Other entries add visual effects for inactive workstations.
9 Apps
EarthDesk
System > Screen SaversDynamic image of earth on your desk.
Flying Windows
System > Screen SaversAn xscreensaver hack which shows either flying X11 icons.
gnome-screensaver
System > Screen SaversScreensaver that can replace xscreensaver. lockvc
System > Screen SaversScreensaver/console locker. XGlobe
System > Screen SaversDisplays the earth on your desktop. Xlockmore
System > Screen SaversXlock and 90+ more modes. Xplanet
System > Screen SaversRenders an image of the earth into the X root window. xscreensaver
System > Screen SaversModular screen saver and locker for the X Window System. XSimpsons
System > Screen SaversBart Simpson walking, falling and climbing along your desktop.