Mac: Any.do, our favourite to-do app on the iPhone, is now available as a native Mac app. It comes packed with Notification Center integration, badges and more.
If you've used the iOS app, the Mac app won't be too much of a surprise. The same minimal interface tags along on the Mac version, and all your to-dos are synced up across devices. The app also features Notification Center integration for reminders, badges for reference to how many to-dos you have left and a quick access button in the menubar. You also get all the features of the iOS version, including the ability to easily share lists, and attach video, audio and photos.
Any.do (free) [Mac App Store]