coconutBattery - With coconutBattery you are always aware of your current battery health. It shows you live information about the battery in your Mac and iOS devices (iPhone, iPad)
Caffeine for Mac - Caffeine is a tiny program that puts an icon in the right side of your menu bar.
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.
Caffeine for Windows - Prevent your computer from going to sleep