To Do is the natural successor to Wunderlist, as Microsoft built it based on Wunderlist features. Read more: Best shared grocery list apps to save you another trip to the store To Do Here are four task-management app alternatives that allow you to directly import your Wunderlist lists, or start new lists. With Wunderlist no longer functional, it's time to find another list-making and organizational app to use, and to move your tasks over. This doesn't really come as a surprise: Microsoft acquired Wunderlist's parent company 6Wunderkinder about five years ago, and debuted its own to-do list app called To Do after that, incorporating many of the same features as Wunderlist. Sorry, Wunderlist devotees: As of May, you can no longer use the list-making app, its owner Microsoft announced back in December. Microsoft's To Do list app replaced Wunderlist in May.