Mac: If you're the type of person to have a lot of applications open all day long, then you know that things get cluttered fast. Hocus Focus is a simple little Mac app that hides unused windows after a set period of time.
Hocus Focus has a few basic options to set up. You can set it so applications are hidden after a set period of time or when you move to another app. You can also set up profiles so it behaves differently depending on what you're working on. It's a nice, easy way to create automated distraction-free spaces to work.
Hocus Focus (Free)