Task management system with the ability to split tasks into subtasks

Question

Task Management

Somehow, a rather interesting article slipped through Habré about a certain task manager in which you can draw tasks in the form of an event tree that will lead to the execution of a particular task.
Maybe I dreamed about it, of course, but it seems to me that something like this slipped on Habré, but point-blank I can’t remember anything that would help me use the search.

Answer 1

Most likely MindManager

Answer 2

ActiTime