OI File Manager is described as 'Allows you to browse your SD card, create directories, rename, copy, move, and delete files. It also acts as an extension to other applications to display "Open" and "Save" dialogs' and is a File Manager in the file management category. There are more than 50 alternatives to OI File Manager for a variety of platforms, including Android, Android Tablet, F-Droid, Windows and iPhone apps. The best OI File Manager alternative is Total Commander, which is free. Other great apps like OI File Manager are Fossify File Manager, Material Files, Amaze File Manager and Prism File Explorer.