KWGT Kustom Widget Maker - Create your own Android home screen widgets
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.
Minimalistic Text - This app generate widgets that display textual information in various styles and formats.
Accubattery - Monitor's battery capacity through the use of science
Close Enough Clock - A next generation clock, a new and better way of telling time.
Power Battery - Power Battery, as the most professional battery saver app, could get up about 60% more battery life for Android phones or tablets.