The underpinnings of GTD-PHP.
- David Allen's GTD System
- The crux of the GTD-PHP application
- a.k.a Dealing with Stuff
- Stephen R. Covey's Seven Habits of Highly Successful People
- Important concepts from Seven Habits have been integrated with the GTD system to create a comprehensive life management system within GTD-PHP
- a.k.a. Dealing with people