There has been a history of threads on here where people talk about Ju Jutsu (or any of its spelling variants) on here. The term "Ju Jutsu" is pretty wide ranging in the 21st Century. I thought I would try to briefly describe (and show) the main variants of Ju Jutsu. If anyone is posting in the future, it might help if they clairfy what it is they are referring to (if they know what it is).
There are 4 categories: Koryu (Classical Japanese systems), Brazilian Jiu Jitsu (style that originated in Brazil in the 20th century), Western Ju Jitsu (a style that was created in the West from a variety of sources that may or may not be Japanese) & Sports Ju Jitsu (Styles that incorporate a wide range of techniques, including striking and kicking, and have competitions for technique demonstration and sparring).
Very old Japanese systems. The unarmed section (Ju Jutsu) is usually only a part of the system. There is generally quite a lot of traditional Japanese weapon work too. It is highly unlikely any of these systems will contain free sparring of any kind.
These styles are VERY rare in todays world, and pretty hard to find outside of Japan. Below are some examples:
Tenshin Katori Shinto Ryu :http://www.youtube.com/watch?v=cQB5Lc1C_a8&feature=related
Brazilian Jiu Jitsu:
Does this even need an introduction lol? Style of Jiu Jitsu that emerged in Brazil, originally driven by the Gracie family.
Generally speaking, it focuses on ground grappling (though many clubs also train other things). It uses resistance training (sparring, aka rolling) to practice and refine technique against a "live" opponent/training partner.
It has competitions based on sparring/rolling.
Here is a more thorough look at it:http://www.youtube.com/watch?v=UVCKEbiEJNc
Western Ju Jitsu:
Next to BJJ, this is probably the most common form of Ju Jitsu in the West.
It usually comprises of striking, grappling & locking, and possibly some weapon work. Although some places include sparring, many places don't. They train using partner drills (similar to Kihon in Karate or step sparring in TKD).
As to their origins... well, it can literally be anything! Wrestling, Karate, Kickboxing, Judo, Krav Maga... anything and everthing can be lumped into a Western Ju Jitsu system. The term "Ju Jitsu" is often used in Western Ju Jitsu as it has been commonly accepted as a term in the West to describe a martial art that is based on a traditional model (e.g. bowing, belt system etc...) , even though the system in question may not have any Japanese martial material in it or any direct links to Japan.
Here are some examples:
World Ju Jitsu Federation:http://www.youtube.com/watch?v=q-gl04dfUBYhttp://www.youtube.com/watch?v=cC3uk69qLhI
Sports Ju Jitsu:
A fairly recent occurence, probably inspired by MMA, Sports Ju Jitsu is pretty similar to Western Ju Jitsu in its origin and content. The main difference is that it includes sparring and competitions.
Sparring is usually similar to MMA; striking, grappling and groundwork are permitted, though certain limitations may apply.
As I said, due to the rise of MMA, popularity in this kind of Ju Jitsu seems to be on the up (based on where I live anyway!).
The main international bodies driving Sports Ju Jitsu are the Ju-Jitsu International Federation and World Council of Ju Jitsu Orginisations (see below for examples from each):
Did I miss anything? Anyone feel free to add. Of course, this is hardly an in depth look at all of the above, but if there is some input from the experienced members on here, maybe this could be considered for a sticky to help people posting in the future????