Proton Calendar Alternatives

Proton Calendar is described as 'Your calendar is a record of your life. Proton Calendar helps keep it private' and is a very popular Calendar app in the office & productivity category. There are more than 50 alternatives to Proton Calendar for a variety of platforms, including Web-based, Android, iPhone, Mac and iPad apps. The best Proton Calendar alternative is Google Calendar. It's not free, so if you're looking for a free alternative, you could try Google Calendar or Tuta Calendar. Other great apps like Proton Calendar are Posteo, KashCal, Nextcloud Calendar and Apple Calendar.

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Alternatives
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Alternatives list

  1. Merkuro is a calendar and contact application that allows you to manage your tasks, events and contacts. Merkuro supports both local calendars as well as a multitude of online calendars: Nextcloud, Google® Calendar, Outlook®, Caldav, and many more.

    123 Merkuro Calendar alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Linux
    • Flathub
    • Flatpak
    • Linux Mobile
    Good alternative?
     
  2. Calendula icon
     3 likes

    A modern Material 3 Expressive calendar for Android. Reads, writes, and reminds — on top of the system calendar, with zero network access.

    Cost / License

    • Free
    • Open Source (MIT)

    Application type

    Platforms

    • Android
    • Android Tablet
    • Obtainium
    • F-Droid
    Good alternative?
     
  3. HEY Calendar icon
     3 likes

    HEY Calendar is a digital scheduling tool designed with a unique approach to managing time and tasks. It offers a feature that allows users to rename days according to their significance, such as designating a day as 'Travel day', 'Anniversary', or 'No work...

    59 HEY Calendar alternatives

    Cost / License

    • Paid
    • Proprietary

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Snapcraft
    Good alternative?
     
  4. Zoho Calendar icon
     2 likes

    Zoho Calendar is an online calendar that helps you stay organised. Zoho Calendar makes scheduling events & appointments, sharing team calendar, booking resources easy & effortless. With over 15 million happy users, we are equipped to cater for different needs - Personal...

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Apple Watch
    Good alternative?
     
  5. Web-based time-management tool featuring appointment scheduling, sharing, reminders, to-do list integration, iCalendar file import, collaborative options, multiple calendar creation, recurring events, and cross-device access for both personal and organizational use.

    76 Outlook Calendar alternatives

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • Online
    Good alternative?
     
  6. Your calendar, on steroids. Enhance your productivity and organise your time with Vimcal touted to be the quickest and fastest calendar app ever.

    Cost / License

    • Free
    • Proprietary

    Application type

    Platforms

    • Mac
    • Online
    • iPhone
    Good alternative?
     
  7. aCalendar icon
     14 likes

    Android calendar-app showing the weeks of the year (week numbers), 21 languages, syncable with Google Calendar:

    55 aCalendar alternatives

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Android
    Good alternative?
     
  8. Daymo icon
     3 likes

    Daymo is a free, open-source calendar for iOS and Android that makes upcoming days and weeks easier to overview at a glance.

    Cost / License

    • Free
    • Open Source (MIT)

    Application type

    Platforms

    • Android
    • iPhone
    • iPad
    • Android Tablet
    Good alternative?
     
  9. LiveDeskCal icon
     3 likes

    Windows desktop calendar widget that brings your calendar to your desktop—always visible, always in sync, and built to keep your day on track.

    Cost / License

    • Freemium
    • Proprietary

    Application type

    Platforms

    • Windows
    Good alternative?
     
  10. SilentSuite icon
     2 likes

    End-to-end encrypted sync for calendar, contacts and tasks. Integrates with your existing apps, data is encrypted on your devices before it ever reaches the server.

    13 SilentSuite alternatives

    Cost / License

    • Freemium
    • Open Source

    Application type

    Platforms

    • Online
    • Android
    • Windows
    • Mac
    • Software as a Service (SaaS)
    • Self-Hosted
    • Docker
    Good alternative?
     
  11. Rise Calendar is a state-of-the-art scheduling tool that utilizes a Scheduling Engine to pinpoint the best times for meetings and tasks that require concentration. Its unique focus blocks feature progressively limits access to your calendar as it becomes fuller, protecting your...

    Cost / License

    • Paid
    • Proprietary

    Application type

    Alerts

    • Discontinued

    Platforms

    • Online
    Good alternative?
     
  12. Calindori icon
     2 likes

    Calindori is a touch-friendly calendar application. It has been designed for mobile Linux devices but it can also run on desktop environments. Users of Calindori are able to check previous and future dates and manage tasks and events.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Linux
    • KDE
    • Linux Mobile
    • Plasma Mobile
    Good alternative?
     
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