Apps that will improve your battery life

Read this list about all the apps available in the market for Android (Google Play Store) to improve your battery life.
Greenify
Go Battery Saver & Power Widget
Avast Battery Saver
DU Battery Saver & Phone Charger
Green Battery Saver & Manager

I would like to add a few apps to the list that include some nifty features:

Greenify
CCleaner
Wakelock Detector

Hi, I just went through the list. Do you think Greenify is good enough to be on the list ?