Nozbe simply touches all the bases. It facilitates GTD-based task management, delegation of tasks and task-based communications beautifully. You can create tasks from emails, convert tasks into projects, share comments, checklists, documents and other information through comments to tasks and do so many other things. It integrates with your calendars and its own calendar view is a fantastic tool for your weekly review. And, you will see the same interface on your iPhone, Android-based device, Windows-based PC and Mac. The ownership is responsive, available -- and has balls. Support is also wonderful.

Nozbe is geared towards the Getting Things Done philosophy. It is simple, quick to learn, easy to get organized and helps direct your attention to what needs to be done now.

I really like the option of having multiple teams. I like that I can color code projects and place them in order of what I'm using the most.