Todoist - Todoist is a to-do list that helps you get organized, at work and in life.
MODI - Create anything you want with robotics of things
Todo.txt - Track your tasks and projects in a plain text file, todo.txt. A todo.
Bitsbox - Monthly code projects for kids
EssentialPIM - EssentialPIM is a free Personal Information Manager that keeps up with the times and lets you manage appointments, tasks, notes, contacts, password entries and email messages across multiple devices and cloud applications.
Ara The Star Engineer - a STEM book on a mission