ToDoBook is a hierarchic task management tool, it allows you to sub-divide your tasks into more manageable pieces. It is written in Java (it is portable), tasklists are stored in XML, and it is compatible with ToDoList from AbstractSpoon Software.
Webager is a web PHP/My SQL based task management solution for buisness people and educational institutions. Users can log in and see which tasks/assignments they need to do as well grades/quality of work for projects and the average average.