Google Calendar - Spend less time managing your day & more time enjoying it
Nextcloud Calendar - The Calendar app is a user interface for Nextcloud's CalDAV server.
Simple Calendar - A simple calendar with events (optional recurring and reminders), week numbers and a customizable...
Rainlendar - Rainlendar - Customizable desktop calendar
Lightning Calendar - Organize your life — it’s about time!
Business Calendar - Powerful and easy to use calendar app for Android including weather, widgets and tasks.