Create, manage and share to-do lists with your entire team using the free app Wunderlist. This app is a must-have for any small business owner or large family. Imagine sharing your shopping list with the whole group, or game planning your company's next conference with your co-workers. You could even plan the best surprise party ever — with the proper planning. You can set recurring to-dos, break big tasks into smaller goals, add notes on various items and set reminders, as well as print out your lists and set due dates.