Sometimes it’s hard to concentrate on a Mac and get things done. With all those open windows – the Twitter client, the browser, music from iTunes, Google Reader – it’s easy to get lost in the information stream and distractions and lose focus on what you were doing. HazeOver, a free Mac app by Maxim Ananov, wants to provide a solution to this problem by offering a simple way to eliminate the visual clutter: fading the background application windows you’re not looking at.

The idea is very simple: the app in the foreground stays untouched, the inactive windows are slightly dimmed to create an effect that will let you concentrate on a single app. So say I have to get an article done in the browser but tweets keep coming in the background through the Twitter app, chances are I won’t look at it like I always do because HazeOver generates this “dimmed background” that will help me stay focused on Chrome.

I don’t know how well the system will work for you, but the app certainly behaves as advertised. Once installed and opened, it will automatically fade inactive windows as an app comes in the foreground. But what if you’re that kind of user who keeps multiple apps running side-by-side for multitasking? You might be out of luck due to HazeOver’s lack of customization settings.

Still, the app is a free download and you can try it out here. Check out the demo video below.