Let’s limit our attention to one application—any application—at any time. Let’s make it easy to change focus when we have to. Let’s allow ourselves to bring other apps up quickly if we need them, but put them out of sight again just as quickly.
Let’s rediscover how to focus, and get back to thinking.
Think helps you concentrate on a subset of your visible applications in Mac OS X. Think is a contrast knob for your brain. Think is free.
When you “illuminate” an app, everything else pops behind a full-screen mask consisting of any solid or transparent color you like. It could be prettier, smoother, more capable, and more configurable, but I love it. Its three hot keys are easy to learn and it works well with Quicksilver. And unlike “Hide Others” (command+option+H) Think also hides my desktop icons and wallpaper.