Fantastical 2 - Fantastical, the Mac calendar app you'll enjoy using. Quickly create new events with natural language input and more.
Meetingbird for Gmail - View your calendar and schedule meetings right from Gmail
BusyCal - powerful calendar app for macOS
Kin Calendar - The simple and connected calendar
Google Calendar - Spend less time managing your day & more time enjoying it
Calendly for Chrome - Schedule meetings without leaving your inbox