Free Open FTP Face is a graphical (GTK+) FTP client written in Python. Its emphasis is on simplicity and convenience. It is multiplatform, easy to use, has a built in text viewer, image viewer, audio player, checksums, and one-click (de)compression.
A minimal FOFF main interface.
Built-in image viewer.
Built-in text viewer.
FOFF's built-in audio player in action.
The choice of GTK+ theme can make it more cluttered.