Collaboration webapp Taskbin shares and manages to-do lists among groups. Flag tasks in order of urgency to prioritise, and write notes for yourself or share them with group members. What separates TaskBin from other tools is that it doesn’t force you to enter deadlines; it’s a simple list manager that gives an unlimited amount of users a lot of flexibility for getting things done. A great choice if you want to get items off your mind without feeling overwhelmed.