GTD with Mybase
I've posted an article about using Mybase for implementing GTD. This approach is quite different than using Outlook or similar tools, so it won't be for everyone. However, I find that combining Mybase's unique collection and reference tools with a simple method for tracking projects and actions works pretty well for me (it's still an experiment at this point).
Note that this approach is really only suitable if you have a very desk-bound job, since there is no Palm or PocketPC component to Mybase.