f.lux - f. lux is a piece of software for Windows, Mac, Linux, iOS, and Android that provides a blue light filter over your screen. Research suggests limiting our exposure to blue light in the hours before bedtime can help us fall asleep faster.

Purp - A smart to-do list and goal tracker app

Darkness: Beautiful Dark Themes - Chrome extension that provides beautiful dark themes for Facebook, Google and more.

Nirow - Habit tracking: Automated, Siri-ed, Calendar-ed, and More!

Dark Reader - Reduce eye strain in your browser with this extension that provides a dark theme for browsing.

Things - Things is an easy to use task manager.