1. Organize your schedule and share events with friends without hassle. With Google's free online calendar, it's easy to keep track of life's important events all in one place.

  2. A simple calendar with events (optional recurring and reminders), week numbers and a customizable...

  3. Keep track of your busy schedule and share it with others using Calendar.

  4. Organize your life — it’s about time!

  5. A full featured calendar client for Android.

  6. Rainlendar - Customizable desktop calendar

  7. Apps/Evolution - GNOME Wiki!

  8. TAPIRapps. aCalendar and aCalendar+ for Android. The fastest Android calendar.

  9. Features | 1.0.175 for Android™

  10. 30 Boxes is almost certainly the easiest way to maintain your calendar and share all or parts of it with friends.

  11. powerful calendar app for macOS

  12. J

    Schedule books must be practical and has a good design.