Switcher Maestro was a little brother for Keyboard Maestro, but it was never well used. Clearly people prefer the power of Keyboard Maestro over a simpler tool like Switcher Maestro, so Switcher Maestro is no longer available.
Keyboard Maestro includes all the features of Switcher Maestro, so please download the free trial of Keyboard Maestro and try it instead.
Switcher Maestro is no longer available for sale.