What are some alternatives?
When comparing Effitask and Org mode, you can also consider the following products
Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
Markor - Text editor - Notes, ToDo & Bookmarks. Markdown and todo.txt support.
Remember The Milk - Remember The Milk is a task and time management application for mobile devices.
todotxt.net - A minimalist, keyboard-driven Windows GUI for your todo.txt file
WorkFlowy - WorkFlowy is an organizational tool that makes life easier. It's a surprisingly powerful way to take notes, make lists, collaborate, brainstorm, plan and generally organize your brain.
Todo.txt - Track your tasks and projects in a plain text file, todo.txt. A todo.