Meetingbird - Powerful meeting scheduling and notes — right in your calendar
Fantastical 2 - Fantastical, the Mac calendar app you'll enjoy using. Quickly create new events with natural language input and more.
Standuply - Run daily standup meetings and track your metrics in Slack
BusyCal - powerful calendar app for macOS
Navigator - The Teamwork assistant — run great meetings without busywork
Google Calendar - Spend less time managing your day & more time enjoying it