Free! TABULE is a planning and tracking tool for college students (signup requires an edu email address) who need help managing assignments or due dates. The scheduling process is standard and straightforward: enter a task, select a due date, and categorize under one or more groups. What's interesting is the text-analysis technology which automatically interprets 'two weeks from tomorrow' or any other temporal language into the correct MM/dd/YYYY value. The group feature is also intriguing though its not super-easy to find existing users (need a username or email). Tabule is available in web format or as an iOS app.