With Heads-up, any device can get the heads-up notifications introduced in the Android 5.0 “Lollipop”, no root required. But according to Addictivetips, this app is much more than just a backport. And according to the users, this app is way better than the original!
HIGHLIGHTS:
Heads-up displays the latest notification as a floating popup, complete with full text and quick actions (4.1+).