Caffeine for Linux - Inspired by the Mac OS X version, Caffeine for Linux is a status bar application able to...
Caffeine for Mac - Caffeine is a tiny program that puts an icon in the right side of your menu bar.
Coffee - An Android application that allows you to keep the display awake without having to change the device settings
Caffeine for Windows - Prevent your computer from going to sleep
Sleepless Mac - Open-source status bar app to keep your Mac from sleeping
Insomniate - Insomniate is a highly lightweight application that keeps your PC from going into Sleep/Standby mode.