The Korean martial arts have their judo equivalent, and it's name is Hapkido. Hapkido is a throwing art designed to put people on their back quickly and effectively. Beyond this, the art also utilizes strikes within its arsenal.
Kuk Sool Won
The sport of mixed martial arts or MMA has become very popular in recent years. When In Hyuk Suh formulated the martial arts style of Kuk Sool Won, he likely did not have a sports focus. That said, he definitely did want to combine the various Korean martial types into one effective discipline.
Tae Kwon Do
Tae Kwon Do is the most popular martial arts type in the world today. This striking art is known for its acrobatic kicks, graceful movements, and usefulness from a distance.
Taekkyon is a ancient Korean martial arts style that teaches practitioners hand strikes, foot strikes, joint locks, and even head butts. Its movements are fluid and dance-like. Many of the Korean arts borrowed something from this style, which took a major hit during the Japanese occupation.
Tang Soo Do
When Korea attempted to unify all of their martial arts under one name, Tang Soo Do founder Hwang Kee held out. Though there are several similarities between Tang Soo Do and Tae Kwon Do, there are some major differences as well (Tae Kwon Do is perhaps more sports and competition oriented, for example).