In Windows there is the hotkey Win + 1-0 to access the programs you have set in your taskbar, numbering from 1 up to the 10th one. Is there a shortcut to access the programs in your taskbar beyond the 10th?
Try this : https://hyperkeys.xureilab.com
Not exactly what you're looking for : You can assign shortcuts to pin a window then bring it back later.
For example, I'm pinning my browser with ALT+SHIFT+A and bring it back with ALT+A. Same for Z, E, R etc (I have an azerty keyboard).