It would be interesting and possibly helpful see what apps different members's forum use and why. Try and limit it to your top 5 or 6. To kick it off, here are mine. MacroDroid – allows users to capitalize on the massive flexibility inherent in android without rooting the phone. Can automate practically every function. Waze – superb navigation app with very timely traffic updates and built in social interaction. ES File Explorer – very powerful file Explorer. Nova Launcher – eliminates the limitations of Touchwiz and provides powerful flexibility. Swiftkey – keyboard replacement with excellent swipe and word predictive capabilities. G Sam Battery Monitor – excellent tool to monitor battery usage and identify hogs.