Nextool is described as 'Task manager that's based on the "Getting Things Done" methodology, but which adds new features that aren't possible with traditional pen-and-paper GTD' and is a todo list manager in the office & productivity category. There are more than 10 alternatives to Nextool for a variety of platforms, including iPhone, iPad, Mac, Android and Windows apps. The best Nextool alternative is Todoist, which is free. Other great apps like Nextool are TickTick, Org mode, Remember The Milk and Things.
momentum is a new approach, implementing a workflow to get things done. Designed to clear up time and space for your vision, goals, projects and very next steps to get there (...nothing new so far).
