Modern Judo is the classic example of a sport that derived from Jujutsu.
Many who study judo believe as Kanō did, that judo is not a sport but a self-defense system creating a pathway towards peace and universal harmony.
Another layer removed, some popular arts had instructors who studied one of these jujutsu derivatives and later made their own derivative succeed in competition.
This created an extensive family of martial arts and sports that can trace their lineage to jujutsu in some part.

The way an opponent is dealt with also depends on the teacher's philosophy with regard to combat.
This translates also in different styles or schools of jujutsu.

Not all jujutsu was used in sporting contests, but the practical use in the samurai world ended circa 1890.
Techniques like hair-pulling, eye-poking, and groin attacks were and are not considered acceptable in sport, thus, they are excluded from judo competitions or randori.
However, Judo did preserve some more lethal, dangerous techniques in its kata.
The kata were intended to be practised by students of all grades but now are mostly practised formally as complete set-routines for performance, kata competition and grading, rather than as individual self-defense techniques in class.
However, judo retained the full set of choking and strangling techniques for its sporting form and all manner of joint locks.
Even judo's pinning techniques have pain-generating, spine-and-rib-squeezing and smothering aspects.
A submission induced by a legal pin is considered a legitimate win.
Kanō viewed the safe "contest" aspect of judo as an important part of learning how to control an opponent's body in a real fight.
Kanō always considered judo a form of, and development of, jujutsu.

A judo technique starts with gripping the opponent, followed by off-balancing them and using their momentum against them, and then applying the technique.
Kuzushi (the art of breaking balance) is also used in jujutsu, whereby an opponent's attack is deflected using their momentum against them in order to arrest their movements then throw them or pin them with a technique — thus controlling the opponent.
It is known in both systems that Kuzushi is essential in order to use as little energy as possible.
Jujutsu differs from judo in a number of ways.
In some circumstances, judoka generate kuzushi by striking one's opponent along his weak line.
Other methods of generating kuzushi include grabbing, twisting, poking or striking areas of the body known as atemi points or pressure points (areas of the body where nerves are close to the skin – see kyusho-jitsu) to unbalance opponent and set up throws.
Modern Judo is the classic example of a sport that derived from Jujutsu. Many who study judo believe as Kanō did, that judo is not a sport but a self-defense system creating a pathway towards peace and universal harmony. Another layer removed, some popular arts had instructors who studied one of these jujutsu derivatives and later made their own derivative succeed in competition. This created an extensive family of martial arts and sports that can trace their lineage to jujutsu in some part.
The way an opponent is dealt with also depends on the teacher's philosophy with regard to combat. This translates also in different styles or schools of jujutsu. 
Not all jujutsu was used in sporting contests, but the practical use in the samurai world ended circa 1890. Techniques like hair-pulling, eye-poking, and groin attacks were and are not considered acceptable in sport, thus, they are excluded from judo competitions or randori. However, Judo did preserve some more lethal, dangerous techniques in its kata. The kata were intended to be practised by students of all grades but now are mostly practised formally as complete set-routines for performance, kata competition and grading, rather than as individual self-defense techniques in class. However, judo retained the full set of choking and strangling techniques for its sporting form and all manner of joint locks. Even judo's pinning techniques have pain-generating, spine-and-rib-squeezing and smothering aspects. A submission induced by a legal pin is considered a legitimate win. Kanō viewed the safe "contest" aspect of judo as an important part of learning how to control an opponent's body in a real fight. Kanō always considered judo a form of, and development of, jujutsu.
A judo technique starts with gripping the opponent, followed by off-balancing them and using their momentum against them, and then applying the technique. Kuzushi (the art of breaking balance) is also used in jujutsu, whereby an opponent's attack is deflected using their momentum against them in order to arrest their movements then throw them or pin them with a technique — thus controlling the opponent. It is known in both systems that Kuzushi is essential in order to use as little energy as possible. Jujutsu differs from judo in a number of ways. In some circumstances, judoka generate kuzushi by striking one's opponent along his weak line. Other methods of generating kuzushi include grabbing, twisting, poking or striking areas of the body known as atemi points or pressure points (areas of the body where nerves are close to the skin – see kyusho-jitsu) to unbalance opponent and set up throws.
Jujutsu