SE-ScreenSavers is described as 'Enjoy fractals or matrix rain, dancing amoebas or kaleidoscope animation, fly over 3D surfaces, watch clock with calendar or growing forest with snowflakes' and is an app in the OS & Utilities category. There are five alternatives to SE-ScreenSavers for Mac, Windows and Linux. The best alternative is Fliqlo Screensaver, which is free. Other great apps like SE-ScreenSavers are Really Slick Screensavers (Free, Open Source), Briblo Screensaver (Free), CodeSaver (Free, Open Source) and Brooklyn Screensaver (Free, Open Source).
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.