I have used a lot of tools to manage my TODO lists, I even wrote one (Taskr - Simple command line utility to manage your tasks). However, I keep coming back to pen and paper. I think I get it now, The biggest drawback of the Todo list apps I've used was that they made managing my Todo lists easy. As a result of which my lists started growing. When I use pen and paper, I have to copy everything to a new page every single day, and THAT is NOT easy. It makes me think which task is worth copying. At the end of the day, this is what makes my todo lists sane. I think I am going to stick to pen and paper for my Todo lists for a long time.