Windows only: Free, open source application MinimOther takes an aggressive approach to distraction by automatically minimizing every window except the currently active window to give you a clutter-free workspace that allows you to focus on the task at hand. As soon as you activate one window, the last active window will minimize, so essentially MinimOther is endlessly minimizing every window but one active window. Granted, one of the great things about the personal computer is its impressive ability to multi-task, but if you ever need to get really serious about focusing on one app at a time, MinimOther might be worth a go. MinimOther is free, Windows only.