Accubattery - Monitor's battery capacity through the use of science
Caffeine for Linux - Inspired by the Mac OS X version, Caffeine for Linux is a status bar application able to...
GSam Battery Monitor - Monitor your android devices battery usage.
AntiSleep - AntiSleep is a powerful software that prevents the system from going into hibernate mode.
Greenify - Greenify is a mobile app that gives you greater control over your Android device's power usage, allowing you to get a lot more mileage out of your battery life without having to constantly plug it back into a charger.
Caffeine for Windows - Prevent your computer from going to sleep