Getting Things Done is a time management methodology, which I’ve started using several weeks ago. The basic idea of the methodology is to get every idea/task/etc out of head and store it in external storage 🙂 For me it really works and helped improved my productivity.
I’ve spent some time testing different programs implementing GTD like Springpad, Evernote or Remember the Milk, but I think that Astrid is the most suitable for me. It’s free, has a nice web interface and iPhone/Android versions. Contrary to RTM, Astrid has a free synchronization service. Furthermore, one can synchronize Astrid’s task with Google Tasks and ProductEnv.