Super File Manager is a sufficiently professional file manager. Of course non-professionals can also use it perfectly. On the basis of the basic file management application we have added more details and professional functions and it is completely open source to provide Everyone to use

Overview:
* Open source light and smooth
* Based on material design guidelines
* Basic functions that are easy to access such as cut copy delete compress extract etc.
* Process multiple tags at the same time support drag and drop gestures
* Multiple themes with cool icons
* Navigation drawer for quick navigation
* Open backup or uninstall any application directly in the application manager
* FTP / FTPS server support
* SMB SFTP client support
* Quickly access history access bookmarks or search any file
* Root Explorer for advanced users
* AES encrypts and decrypts files to ensure safety (Jellybean v4.3+)
* Cloud service support (Jellybean v4.3+ / additional plug-in required)*
* Built-in database reader Zip/Rar reader Apk reader text reader
* No ads
There are a lot more...

Note-Basic r/w operations may not be applicable to external storage on Kitkat devices. Don't use cut/paste of external SD card. You may lose files.