In my opinion kajukenbo has more to offer But here is the history

The founder of Krav Maga,
Imi Lichtenfeld was born and raised in Bratislava, Czechoslovakia. A natural athlete, he earned national and international awards in gymnastics, boxing, and wrestling. Influence of Imi's Father However, Imi's greatest influence was his father,Samuel, a police officer and self defense instructor. Samuel started his career as a circus acrobat and wrestler, but later entered the police department and served for 3 decades as Chief Detective Inspector. He became well known for his considerable arrest record, particularly of dangerous criminals. During the 1930s, Imi honed his fighting skills in the streets of Bratislava, protecting himself and his Jewish neighbors from local fascist thugs. He took part in numerous fights to prevent anti-Semitic groups from terrorizing the Jewish community in the city. These fights sharpened his awareness of the basic difference between sport and street fighting. It was at this time that the seeds of Krav Maga's principles were planted in his mind. When not on the trail of violent felons, Samuel taught various self defense techniques to the local policemen at "Hercules," the first gym in Bratislava, which he owned. In his training, Samuel constantly emphasized the need for proper moral conduct when dealing with the public and suspected criminals alike.
The fledgling Israeli government asked Imi to develop an effective system of self defense and fighting, which later became the Krav Maga system. The Haganah was eventually incorporated into the Israeli Defense Force, and Imi became the Chief Instructor for the military school for Physical Training and Krav Maga. In 1978 Imi and several of his students created the Krav Maga Association, a non-profit public benefit organization aimed at promoting the teaching of Krav Maga in Israel and throughout the world.Imi Lichtenfeld died in 1998 at the age of 88. His funeral was attended by many of the highest-ranking and most important members of the Israeli military. He will be sorely missed. But Imi's legacy lives on. His system of Krav Maga was foundedon moral and human values, emphasizing personal integrity, non-violence, good citizenship, and humble conduct. These principles have been, and will continue to be, the guiding force for the students of Krav Maga. To date, Krav Maga has been taught to thousands of civilians, law enforcement, and military personnel in Israel, Europe, and the United States. Through his efforts, Imi has saved numerous lives and has helped thousands to "walk in peace."