bear2008

I know there are different Ninjutsu organizations. They are:
Bujinkan-Genbukan-Jinenkan(These come from the same great master Takamatsu)
Dux Ryu Ninjutsu
Koga Ryu Ninjutsu
There is Japanese Ninjutsu master named "Jinichi Kawakami". He claims to be the only true Ninjutsu schools heir. He believes Hatsumi's schols are traditional bujutsu and not Ninjutsu.

Mr. Arieson

None! The closest you would get is traditional japanese ju-jitsu and Ken-jutsu. Also the traditional weapon arts.

However, the most effective modern art based on "ninpo" would be Bujinkan, in my opinion. I would not even mention Dux martial arts in the same vein as ninjitsu. It's about as "real" as that of Ashida Kim. In other words, not at all.

Bujinkan has a lot of practioners who believe deeply in reality based training. I have been to one of thier dojos (for about 6 months) and found it to be excellent. But, they train hard, and I was getting hurt a lot. There were quite a few cops and military guys in the class, along with the typical dungeons and dragons type fat guys.

__________________
Optional signature you may use to appear at bottom of your posts