Remember The Milk

Getting Things Done (GTD) is an organizational method created by David Allen. The basic concept is to help people to figure out everything that's holding their attention – big and small – and to make (and revisit) a list of tasks based on their needs. It's a productivity method but also designed to help people have better peace of mind. Remember the Milk is a GTD-style app that is like a clean but enhanced to-do list. It's accessible from both mobile devices and the web. [Free; Android and iOS]