Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
Nirow - Habit tracking: Automated, Siri-ed, Calendar-ed, and More!
TaskPaper - Plain text to-do lists for Mac
Taskful - Deadlines, meet your match.
Microsoft To-Do - Task management tool
Streaky - Achieve daily goals and build your personal streak 🔥