ProductiveApp.io - Productive is a habit tracking application.
Momentum - Agile goal and performance management
Streaks - The to-do list that helps you form good habits.
Gratitude Flow - Gratitude Flow is a web extension that allows you to share and receive gratitude on your new tab with real people around the world.
Strides - Track all your goals & habits in one place, with flexible reminders to hold yourself...
New Tab by Flickr - Get a beautiful photo each time you open a new tab