Actuflow - App for checking why you use your smartphone before using it
nodo - Manage your daily tasks in the command line
DND Me - Schedule Do Not Disturb from your Mac's menu bar
Prompt - Prompt provides fully-integrated writing education solutions, combining instruction, curriculum, and feedback. We support educational institutions, companies, and individuals.
RescueTime - Time management software that shows you how you spend your time & provides tools to help you be more productive.
Commandline Challenge - Test your command line skills