1. Google Calendar

    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. ✓
    HourStack

    Make time to get your tasks done.

    paid Free Trial $5.6 / Monthly (When billed annually)

  3. CT

    Code Time

    VS Code extension for automatic programming metrics

  4. aCalendar

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

  5. CalenGoo

    Features | 1.0.175 for Androidâ„¢

  6. Apple Calendar

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

  7. Simple Calendar

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

  8. Evolution

    Apps/Evolution - GNOME Wiki!

  9. DigiCal

    A full featured calendar client for Android.

  10. TAI

    Trevor A.I.

    Personal assistant that helps you manage your time

  11. Humanity

    Introducing a Human way to manage your business Beautiful and easy-to-use business management software designed to organize your most valuable asset — your people. Try it free.

  12. Rainlendar

    Rainlendar - Customizable desktop calendar