Customize your Galaxy devices a lot? You will want to try out Wanam Xposed then. It is a free Android application that can tweak lot of stock Samsung TouchWiz Android 4.2+ firmware. Yes, it is still workable on custom ROM as well. I am using it on Galaxy S4 custom ROM now. Here are some examples of the useful features that it brings – Call recording, 4 ways reboot (Reboot, Recovery, Hotboot and Download), secured Samsung keyboard, long back key to kill app, force disable camera shutter… Good stuffs are not free. It requires root access and Xposed Framework 2.2. Trust me, it worth the price.
Interested? Get it here.