NotifierPro gives you swipeable banner notifications, so you don't have to pull down the notification shade to see who sent you what. It also works on third party apps like Whatsapp and Twitter. Plus, themes! I love themes.
Way better notifications that regular ones. Simplyfies my time when busy. Design 10/10. Just one con, as an S4 with sview cover user, I hate when it pops when the cover is close cause it mess everything up.