Exoskeleton have evolved as leading tools for augmenting able-bodied performance which is assisting human mobility and restoring lost limb function exploiting biomimetic design, the device may be worn in close proximity to the body and transmits torques via powered revolute joints and structural limbs. In the present work a comprehensive design and fabrication of hand exoskeleton technologies for rehabilitation and assistive engineering were made from the basic hand biomechanics to actuator technology with the involvement of pneumatic power. The designed suit reviews the state of the art of active hand exoskeletons for the applications in the areas of rehabilitation and assistive robots.