Vimcal - Vimcal is the world’s fastest calendar, beautifully designed for people who work remotely and live in their calendars.
Meetingbird for Gmail - View your calendar and schedule meetings right from Gmail
Button for Google Calendar™ - See your daily schedule and join meetings in one-click.
Kin Calendar - The simple and connected calendar
Calendarist - Time blocking companion for Google Calendar
Calendly for Chrome - Schedule meetings without leaving your inbox