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.
Lightning Calendar - Organize your life — it’s about time!
Etar - Material design open source calendar for Android.
Morgen.so - All-in-one Calendar, Tasks & Scheduler. Morgen is the single hub for everything that revolves around time management.
Simple Calendar - A simple calendar with events (optional recurring and reminders), week numbers and a customizable...