| Reference Filing | Next Physical Action | Defining Purpose And Principles | Make It Up, Make It Happen | Trusted System |
| One Alpha System | Action Lists | Avoid Hanging Files | 30000 Foot | Identifying Next Actions |
| Runway | 10000 Foot | GETTING THINGS DONE BINGO (free square) | 20000 Foot | Next Action |
| Brainstorming | Nonactionable Items | Calendar | Mind Like Water | Organizing |
| Action Reminders | Open Loops | Outcome Visioning | Defining Your Work | Someday/Maybe |
| Horizontal & Vertical Control | Project Thinking | 10000 Foot | Brainstorming | Next Physical Action |
| Next Action | Make It Up, Make It Happen | 40000 Foot | 20000 Foot | 30000 Foot |
| Avoid Hanging Files | Calendar | GETTING THINGS DONE BINGO (free square) | Tickler File | Open Loops |
| Defining Purpose And Principles | One Alpha System | Action Lists | Action Reminders | Organizing |
| Natural Planning Model | Five Stages Of Workflow | Identifying Next Actions | Outcome Visioning | Waiting For |