Thx for the quick answer ! I read lot of post on the subject, but I think it's the first I see from the dev team. I apreciate. Ok, so it's best if I don't count on it soon. Thx again for the answer Ltn PS :Speaking for myself : I can't imagine using a notes repository applications that doesn't implement some kind of sub folder and a tag system. Evernote has everything I need except "subnotebooking" Judging by the number of posts on this suject I'm not the only one waiting for this feature. IMHO, you should think seriously about developing this feature (even if it dificult to implement in the actual code). Especially since this is a no intrusive feature (people that doesn't need/like sub-notebook don't have to use them) You will make a lot of people happy and really thinking about switching to Evernote (like myself) Appart for this -imo surprissing- miss, Evernote is really a amazing piece of work. Congratulation !