Caffeine for Linux - Inspired by the Mac OS X version, Caffeine for Linux is a status bar application able to...
Padbury Clock Screensaver - Minimal screensaver for Mac
Caffeine for Windows - Prevent your computer from going to sleep
XScreenSaver - XScreenSaver is the standard screen saver collection shipped on most Linux and Unix systems running...
KeepingYouAwake - A Caffeine clone for macOS Yosemite, El Capitan and Sierra (including Dark Mode).
Really Slick Screensavers - Really Slick contains free 3D OpenGL screensavers.