File Manager
Android have certainly become one of the most powerful OS out there and to add to its existing capabilities it comes filled with a ton of system files for various downloads, DRIM files, Cache memory etc. So if you want to do justice to all of them make sure to download a capable File Manger.
Created by Rhythm Software, this developer is heavily into Android utility apps and after testing almost all of their apps I have to say that all performed really well.