GSDlist

A new take on ToDo Lists and task management with tags, locations, verbs, teams, and power. Build a deep list of things you intend to do, and manage them by time, category, and location into a Today list -- Getting' Stuff Done. The author is a veteran Apple developer and built this for his own use, and has over 37,000 closed items in the app, over almost 10 years of use. It's a good app.