Todour is described as 'Application for handling todo.txt files (as made famous by Gina Trapani of Lifehacker) on Windows, Mac and Linux. The format is especially practical for an approach similar to the one suggested in the book Getting Things Done by David Allen, often referred to as' and is a todo list manager in the office & productivity category. There are more than 100 alternatives to Todour for a variety of platforms, including Web-based, iPhone, Android, Mac and iPad apps. The best Todour alternative is Trello, which is free. Other great apps like Todour are Todoist, TickTick, ToDoList and Quire.