A free program for Android, by Baloota.

This file manager for Android is the best tool for your phone. With it, you can easily browse your phone’s files, create new ones, delete them, and move them to the SD card or internal storage. You can do all that without the need to connect your phone to the Internet. It’s a real file manager, and you can use it on any Android device.

You can also create and manage password-protected archives. And this application supports the SD card, internal storage, and even the phone’s memory.