stickK - stickK enables users to form commitment contracts to help them achieve their personal goals.
Vimcal - Vimcal is the world’s fastest calendar, beautifully designed for people who work remotely and live in their calendars.
YourHour - YourHour is an app by Mindefy labs through which you can easily overcome with your phone addiction by monitoring your phone usage.
Button for Google Calendar™ - See your daily schedule and join meetings in one-click.
Momentum - Agile goal and performance management
Calendarist - Time blocking companion for Google Calendar