Gone - An ephemeral to-do list
Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
Streaks - The to-do list that helps you form good habits.
TaskPaper - Plain text to-do lists for Mac
Taskful - Deadlines, meet your match.
Magnetic - Magnetic is an all-in-one agency management software built for productivity.