TaskUnifier is a desktop task management app that’s designed to work with the Getting Things Done (GTD) system. While it has a functional and unattractive UI, it’s free, has all of the features most people will need and is fairly easy to use. It’s written in Java, so works on Windows, Mac and Linux, and can sync tasks with Toodledo, the online task management app that’s a favorite of several WWD writers. I made a short screencast to show it in action:
It won’t win any points for style, and it’s still a work-in-progress so some features may not work perfectly just yet, but if you’re looking for a free GTD-capable desktop client for Toodledo, it’s worth checking out.