Nirvana vs Org-mode : Which is Better?

Nirvana

Nirvana is a cloud-based task manager that isn’t just about doing more.

License: Freemium

Apps available for Online Android iPhone Android Tablet iPad

Org-mode is an Emacs Mode for Notes, Planning, and Authoring. Developed by Carsten Dominik

License: Open Source

Apps available for Mac OS X Windows Linux Android iPhone

Feature	Nirvana	Org-mode
Collaborative
GTD-based
Real time collaboration
Task Management
To-Do management
Cloud sync
MarkDown support
Search by tags
Protected by Password
Alexa integration
Dropbox integration
Favorites
Gamification
Recurring tasks
Dependency Tracking
gmail.
Support for Kanban Boards
Double Donut Chart
Kanban boards
Self-hosted in intranet or private cloud
To do lists
Subtasks
Hierarchical structure
Team Collaboration
Support for Keyboard Shortcuts
Clean design
Full text search
IFTTT integration
Gmail integration
Google Calendar integration
Customizable
Emacs integration
Web-Based
Command line interface
Calendar view
Calendar integration
Customizable Themes
Things is polished almost to perfection
Convert Email to Task
Project Dashboard
Export to HTML
Extensible by Plugins/Extensions
Hierarchical tagging
Infinite hierarchical depth
Lightweight
Notetaking
Outline mode
Outliner
Plain text file
Portable
Privacy focused
Publishing
Tag based
Todos
Share notes
Works Offline
Photo notes
Sync on many devices
End-to-End Encryption
Encrypted Notes
Database
Visual bookmarks
Custom templates
Wiki-like interface
Export to LaTeX
File Versioning
Export to OPML
Distraction free writing
Tracking of characters
File-organization