I started to read the book by David Allen "getting things done". I read the first 100 pages, very much. But when I read for the "incoming basket" and the reminder, the question arises, is there any product that already has been implemented on the basis of his methods? I would like to learn and start to use it. It is certainly possible to start using pivotaltraker with google calendar (or any other combination of software products to solve these problems), but I would like to find a site which implemented the methodology of David in the form of a software product.