With the advancement in the area of robotics, exoskeleton technology has come a long way since its beginnings in the late 60's. Researchers over the world have developed their own exoskeleton prototypes and some of the well known exoskeleton includes the BLEEX, MIT exoskeleton, HAL, LOPES, ALEX and many more. Although technologies have since improved from the 60's, challenges still exist in exoskeleton design. In this study, we are going to review different exoskeleton technologies as well as its role in the area of rehabilitation. This purpose in rehabilitation is promising, based on countless of researches which have been done.