A free program for Android, by Face up.

My Files is a free and useful file manager and viewer app for Android devices. It helps you find, manage, and open files on your device, SD card, and USB drive. It supports many file formats, including videos, images, documents, and music. You can also manage your device’s memory, microSD card, local area network, and internal storage.

The app has a user-friendly interface and supports renaming, unzipping, and copying files. You can also delete or share files with other users. It also supports many file compression formats. 

It can also be used to browse your device’s SD card, USB drive, and memory. You can also use it to view files in your device’s root directory.