We want our to-do list apps to do two things: Tell us our tasks and get out of the way. That's exactly what the beautifully designed Clear app does. Not bogged down with features, Clear lets you put in what tasks you need to do, color-code them by importance, and then swipe them away once they're complete. It's one of the best to-do list apps we've ever used, if not the best. And since its release earlier this year, the Clear team has produced a Mac OS X version of the app so you can keep track of your to-do list from whereever you are.