Abstract: A bottle cap opener for opening twistable type caps. The opener may include a housing to apply a twisting force to the caps. Twisting force may also be applied via a handle. The opener also may include cap grabbers movable within the housing. The progressively narrowing interior shape of the housing allows the cap grabbers to adjust to the size of the cap. The opener also may include engaging members that engage the cap grabbers at a particular position within the housing. The engagement can be accomplished with a set of teeth on the cap grabbers and a corresponding hook member on the engaging members. The engaging members are pivotally mounted and include engaging spring to provide the engaging forces. A spring exerts a downward on the cap grabbers. The bottle opener retains the bottle cap in the housing after the bottle is opened until the user disengages the engaging members.