I need help to get a list of nds games from my microsd

Yes like the little said i have in my flashcarts separate in folders my roms are in this context:

NDS
UNDUB
Translations
Romhacks
Dsiware
Homebrew

Can anyone give a software to list them quickly and export in file log,txt? I don know much from utilities like im describe it,but someone asked how many games have and basically its around to 33 gb my microsd.

Note:In all the folders roms arent repeat from example in UNDUB have the megaman zero collection and its not listed in the nds...

I need help to get a list of nds games from my microsd