Wunderlist is certainly the best task management app we have ever used! It allows you to create separate list for separate projects and you can also share the list with your friends & family facilitating easy collaboration. Further, various lists can be grouped into folders (say personal & office). You can also use hashtags to add topics to your tasks which allows you to filter tasks topic-wise just like Twitter! It sync in real time and all your tasks can be accessed from any device. Want to attach documents or photos to your tasks for ready reference? Well, Wunderlist has got you covered! You can also opt for its push & email notifications to get reminded about important tasks. It will not be wrong to say that Wunderlist not only manages your task but organize your life as well. Try Wunderlist (if you haven’t already) to get your stuff done more productively! And yeah… all features of the app are available for free now!