BatteryCare - BatteryCare - Application and good practice guide for maintaining and optimizing the battery of the modern laptop

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)

BatteryBar Pro - BatteryBar Pro is software for windows that enables users to check their Battery performance and stats.

GSam Battery Monitor - Monitor your android devices battery usage.

Accubattery - Monitor's battery capacity through the use of science

BatteryInfoView - small utility for laptops and netbook computers that displays the current status and information about your battery