ProtonCalendar Alternatives

    ProtonCalendar is described as 'takes a comprehensive approach to user data security. No other calendar keeps as much data private as ProtonCalendar' and is a Calendar App in the Office & Productivity category. There are more than 10 alternatives to ProtonCalendar, not only websites but also apps for a variety of platforms, including Windows, Linux, Mac and Android. The best alternative is Google Calendar, which is free. Other great sites and apps similar to ProtonCalendar are Lightning Calendar (Free, Open Source), Rainlendar (Freemium), Nextcloud Calendar (Free, Open Source) and Calendar (Free).

    This page was last updated Oct 28, 2021

    1. With Google Calendar, its easy to keep track of all your lifes important events in one place. You can add events and send invitations effortlessly, share your schedule with friends and family, and search for events you might enjoy.
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    2. Organize your schedule and life’s important events in a calendar that’s fully integrated with your Thunderbird or Seamonkey email. Manage multiple calendars, create your daily to do list, invite friends to events, and subscribe to public calendars.


    3. Rainlendar is a feature rich calendar application that is easy to use and doesn't take much space on your desktop. The application is platform independent so you can run it on all major operating systems: Windows, Linux and Mac OS X.
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    4. The Calendar app is a user interface for Nextcloud's CalDAV server. Easily sync events from various devices with your Nextcloud and edit them online.
    5. Calendar, part of Office Online , is a time-management web application by Microsoft.
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    6. Kalendar is a Kirigami-based calendar application that uses Akonadi. It lets you add, edit and delete events from local and remote accounts of your choice, while keeping changes syncronised across your Plasma desktop or phone.
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      • FreeProprietary
      • Online
      newDay is an experimental timekeeping and calendar system that helps users to set intentions for each of the ten newHours that comprise a newDay. Introducing newTime
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    7. Android calendar-app showing the weeks of the year (week numbers), 21 languages, syncable with Google Calendar: FEATURES * intuitive navigation with smooth transitions * day, week & month calendar * 48 colors per calendar, per-event color if supported by the calendar...
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    8. Calendarscope is a full-featured calendar software for planning, managing, and scheduling appointments, meetings, birthdays, vacations, special events. It allows you to view all your events in a daily, weekly, monthly, or yearly overview.
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    9. You can view an entire month or focus on a specific date and time. You can also assign colors for different calendars and to-do lists, and drag-and-drop events between dates or years.
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    Showing 10 of 15 alternatives