Wide known and really great application ToDoList supports multiple task list but doesn't allow to see all incomplete task in one window.
The ToDoListReminder application shows incomplete tasks for all task list.
Long time for the task management I use nice application ToDoList
from the AbstractSpoon Software http://www.abstractspoon.com/
. I prefer to separate tasks per project. For each project I create its task list. The ToDoList application reflects them as multiple tabbed window. To see incomplete tasks I have to check all tabs. Just to do this work a little bit easy I created this application - ToDoListReminder.
100% FREE award granted by Softpedia http://www.softpedia.com/progClean/ToDoListReminder-Clean-148506.html