Remap Left Control to Hyper OS X doesn't have a Hyper. This maps Left Control to Control + Shift + Option + Command. space_cadet.left_control_to_hyper --KeyToKey-- KeyCode::F19, KeyCode::COMMAND_L, ModifierFlag::OPTION_L | ModifierFlag::SHIFT_L | ModifierFlag::CONTROL_L SAFARI com.apple.safari Escape to Option + Escape on Safari.app private.safari_escape SAFARI __KeyToKey__ KeyCode::ESCAPE, KeyCode::ESCAPE, ModifierFlag::OPTION_L