Vitashell is a file manager for the PSVita, Vitashell was written with the help of the Vita2D library and it includes a decent GUI that’s customisatiable via themes. You may toggle between FTP and USB modes in VitaShell 1.5 or newer. With VitaShell, you can also listen to music, view pictures, compress files and extract ZIP and RAR files.

changlelog of VitaShell 1.51:
◾Fixed bug where ‘Please wait…’ was shown instead of a specifc USB message.
◾Fixed VPK installation crash.
◾Fixed bug where ‘theme.txt’ was always reset.
◾Updated to newest libftpvita.

Download here -->