It’s a great web-based task manager. What I really like about it is that it work on two levels – you can build a very simple task list very quickly, or you can do some much more sophisticated project management if that’s what you require.
It’s also great value. You can have as many projects as you like, shared with up to 15 people, all for free. Only if you go above the 15 person limit do you need to start paying.