The application name is POWER TOGGLES and it is a free – yes, FREE – application provided by Painless Death:
https://play.google.com/store/apps/details?id=com.painless.pc&hl=en
While this application has many cool features, where it REALLY shines in my opinion is its ability to add a toolbar to the top of your notifications screen. This is immensely useful for people like myself who have broken their screen and have lost the three android buttons as a result. The notification screen can contain your ‘Home’ and ‘Recent Applications’ shortcut icons to assist you in navigating without two of the three buttons you’ve lost (still no replacement for the ‘Return’ button, but 2 out of 3 “ain’t bad”):
