The development of Marta started the long before I knew about fman, so it's not any kind of imitation. Actually, in the beginning, I also thought about making the cross-platform file manager, but I quickly realized that the approach with the existing GUI libraries just won't work (and still think so).

I tried the closed alpha of fman (and also the number of other file managers) because of curiosity. I naively hoped that someone has already done what I need. ;)