This ontology defines a very general class (Task) which can used for any kind of bug tracking, issue tracking, to-do-list management, action items, goal depednency, and so on. It captures the state of a task as a subclass, so that subsumption can be used. It captures a discussion thread about a task. It captures subtasks structure if necessary. A "Tracker" defines actual set of states, categories, etc., which a task can be in. The data about the tracker guides the software managing the task. There is some workflow modeling finite state machine terms which are optional for more complex definition of the transitions allowed.