If you are looking for a brightness widget, you should know that Gesture Brightness is more than a widget! It is a cool and customizable brightness controller. You can activate it with no need to look at your display, wherever you are and whatever you are doing, just tap on the top corners of the screen in sequence(tutorial inside) and that's it! Simple huh? Isn't it enough? Read more:
*** Features ***
√ SAVE BATTERY! It doesn't use hardware sensors and it doesn't drain your device's energy.
√ SAVE SPACE IN YOUR HOME SCREEN!
√ PERSONALIZE IT!
√ ALWAYS ON TOP! Once enabled, it will be shown in foreground, no matter what you were doing.
√ WORKS ON SCREEN LOCK TOO!
√ IT'S COOL! Animations, HD graphics, haptic feedback and...sound
√ SAVE THE NATURE! It won't ever make you yell at the sun anymore just because you can't find the brightness settings under its light!
Note: This is the free version of Gesture Brightness, it's ad-supported by Airpush and it's full working but some customizations are disabled.