Apps like Nirvana for GTD®

Here are some great alternatives to Nirvana for GTD® by Nirvanahq, Inc :
DGT GTD & To-Do List
DGT GTD & To-Do List
★4.6
Chaos Control: GTD Organizer &
Chaos Control: GTD Organizer &
★4.4
Chaos Control 2: GTD Organizer
Chaos Control 2: GTD Organizer
★4.2
Everdo: to-do list and GTD® ap
Everdo: to-do list and GTD® ap
★3.5
Focus GTD 3
Focus GTD 3
★4.2
Ping: AI To-Do List & Planner
Ping: AI To-Do List & Planner
★4.0
Google Tasks
Google Tasks
★4.6
Task Triage
Task Triage
★4.7
HibiDo: Todo, Calendar & Notes
HibiDo: Todo, Calendar & Notes
★3.8
WeDo: Task/TODO sharing app
WeDo: Task/TODO sharing app
★4.9
Simple To Do List
Simple To Do List
★4.5
MyLifeOrganized: To-Do List
MyLifeOrganized: To-Do List
★4.4
Superlist - Tasks & Lists
Superlist - Tasks & Lists
★4.2
SingularityApp: To Do Lists
SingularityApp: To Do Lists
★4.3
Ultimate Notes & Tasks w/ Sync
Ultimate Notes & Tasks w/ Sync
★4.0
Redbooth - Project Management
Redbooth - Project Management
★4.1