Briblo Screensaver!

A screensaver that displays the time using a flip clock.

Really Slick contains free 3D OpenGL screensavers. All of these savers are colorful and exhibit rich animation that never repeats. Some are based on classic screensaver themes, such as fireworks, swarms, and plasma. Others are more original and psychadelic, with geometric patterns based on principles of physics and mathematics. The screensavers are originally written for Windows, but the downloads page contains links to ports of other platforms such as Mac OS X and Linux.

XScreenSaverWin is a Windows port of XScreenSaver. 204 screensavers in XScreenSaver were ported. A few of the screensavers have some issues. Check the status page for more. (This app is no longer free or open source starting with v0.80.)

Microsoft Video Screensaver allows Windows users to set a folder from which videos shall be used for a screensaver. You may choose to have audio on or off and can use any video you have a media player codec for.

XScreenSaver is the standard screen saver collection shipped on most Linux and Unix systems running the X11 Window System. The first version was released in 1992. In 2006, it was ported to macOS 10.4.

Clock Screen Saver is a free cool looking screen saver that displays the current time in the way of digital or analog clock faces.

Enjoy fractals or matrix rain, dancing amoebas or kaleidoscope animation, fly over 3D surfaces, watch clock with calendar or growing forest with snowflakes. SE-ScreenSavers helps you relax and get away from everyday routine.

A truly "open source" screensaver that "types" its own code (or other selected text files) to the screen.

gnome-screensaver is a new screensaver that can replace xscreensaver. It is designed to integrate well with the desktop and provide a control interface that is desktop neutral. It simplifies and streamlines the experience for the user and provides more capability for the system administrator and vendor.