Have a look to basecamp. Here todo list can be generated via Ajax and easily moved around. In most projects it occurs
that you need to manage todolists. This is much more then a tracker. A Todo List must be flexible in creation as often
it occurs that the order of a todolist isn’t the right order how it should be, so you need to reorganise a todolist.

Todo Lists could especially help also in recuring tasks – especially when you run projects. A Template (see basecamp)
gets stored and you can just pull it our for the new project. Then the developer or customer or who else is involved
in the task can check all steps he has just done.

If a (Template)List needs to be modified you can easily add some new features or reorganise the structure. This is also
especially good for NON Software projects where i..e you have Travel-Plannings …