It has come a long way, I tried an earlier version of this software and there was the problem that the fonts could not be customised. Now, after a long while I installed CoreFTP again and all works just great includ-ing adjusting the fonts.
The only things to improve, as already mentioned here in another (older) message by someone else, are more professional button icons. The current icon set looks, em, a bit too semi professional 
otherwise, good job guys, ..keep going!