Gone - An ephemeral to-do list
Time 2 - Stay focused and crush procrastination
Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
Progress Bar OSX - This is your life and it's ending ⏳ one minute at a time
Check - Check is a unit testing framework for C, which runs on environments such as GNU/Linux, GNU/Hurd, BSD, and Mac OSX.
Things - Things is an easy to use task manager.