Although it describes itself as a
minimalist file manager, I have only words of praise for Sunflower,
since it rather gathers a lot of features in a compact interface, and I
do believe it needs a bit more attention. Sunflower
is a twin-panel file manager with a somewhat different approach
compared to standard GNOME/KDE/Xfce file browsers, written in GTK with
several notable features and support for plugins.

Complete story here:  http://www.tuxarena.com/2014/03/a-look-at-sunflower-file-manager-ubuntu-installation/