This module provides single-user hierarchical task management. It works together with Progress Tracking, but does not require it (currently it hides finished tasks). Tasks can be rearranged with drag-drop. Each task has a name and description, nothing fancy.
This screenshot should make clear what it's about: http://limyreth.sinners.be/2012-09-08-184715_979x563_scrot.png
Here's the sandbox I created for it: http://drupal.org/sandbox/timdiels/1779320
This is what it looks like to anonymous users with read access: http://limyreth.sinners.be/drupal/taskmanagement/tasks (I also have other modules enabled, like Progress Tracking)
Related projects:
- Storm: Offers tasks, but doesn't display them in a hierarchy, doesn't allow drag-drop reordering, has lots of things I didn't need.
- OpenAtrium: Offers more of a ticketing system than a hierarchy of tasks. A list of tickets is flat and provides no overview, which is where the hierarchical element comes in to play.
I'm developing this for Drupal 7.