RootReg can register and un-register files in your system
RootReg download
KingoRoot for Android, the best One Click Root Tool/APK for free.
EMSA Register Dll Tool offers information about dll, ocx and exe files.
RegSanp takes a snapshot of your registry and compares it against another.
RegRunner watches for changes in your registry, and warns you about them.
It detects your registry errors and junks to clean, fix and tune.
Free 
