Habit List - Create good habits and break bad ones with the app that keeps you focused.
Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
Momentum - Agile goal and performance management
TaskPaper - Plain text to-do lists for Mac
everyday.app - Every day, it gets a little easier. But you gotta do it every day, that's the hard part.
Microsoft To-Do - Task management tool