Nirvana is described as 'Secure, cloud-based GTD® task manager accessible from your desktop web browser and mobile devices. If you have more to do than you can manage in your head, or if you want greater clarity of mind and focus in life, Nirvana is for you' and is a popular todo list manager in the office & productivity category. There are more than 100 alternatives to Nirvana for a variety of platforms, including iPhone, Web-based, Android, Mac and Windows apps. The best Nirvana alternative is Todoist, which is free. Other great apps like Nirvana are Wekan, TickTick, Habitica and Snaptick.