Plug - Lightweight OSX player for Hype Machine
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)
REVEL GEAR - The future of portable power and light
Accubattery - Monitor's battery capacity through the use of science
NETATMO Healthy Home Coach - The smart indoor climate monitor
GSam Battery Monitor - Monitor your android devices battery usage.