KeepingYouAwake - A Caffeine clone for macOS Yosemite, El Capitan and Sierra (including Dark Mode).
Caffeine for Windows - Prevent your computer from going to sleep
SmartSleep - SmartSleep lets you select each sleep state.
Caffeine for Linux - Inspired by the Mac OS X version, Caffeine for Linux is a status bar application able to...
Open Authenticator - A trusted open-source Authenticator. Formerly known as SmartWatch2 Authenticator free.
SafeSleepOnce - SafeSleepOnce puts your Mac into safe sleep once and automatically enables normal sleep afterwards.