What are some alternatives?
When comparing Effitask and Todo.txt, 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
Taskwarrior - Taskwarrior is an ambitious project bringing sophisticated capabilities to a simple and elegant...
WeDo - WeDo is the best platform for planning and daily tasks management activities.