Lindy Hop is a dance developed in the Savoy ballroom in Harlem. The major styles of Lindy danced today are Savoy-Style Lindy Hop, Hollywood-Style Lindy Hop, LA style Lindy.
Lindy Hop is much more intensive than East Coast Swing it is done in 8 counts of music rather than 6 counts.
The basic step is called the Swing Out.