Caffeine for Mac - Caffeine is a tiny program that puts an icon in the right side of your menu bar.
Open Authenticator - A trusted open-source Authenticator. Formerly known as SmartWatch2 Authenticator free.
Caffeine for Linux - Inspired by the Mac OS X version, Caffeine for Linux is a status bar application able to...
Caffeine for Windows - Prevent your computer from going to sleep
SmartSleep - SmartSleep lets you select each sleep state.
Insomniate - Insomniate is a highly lightweight application that keeps your PC from going into Sleep/Standby mode.