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 popular Calendar app in the office & productivity category. There are more than 25 alternatives to Proton Calendar for a variety of platforms, including Web-based, iPhone, Android, iPad and Mac apps. The best Proton Calendar alternative is Tuta Mail, which is both free and Open Source. Other great apps like Proton Calendar are Google Calendar, Tuta Calendar, Etar and Notion Calendar.

Proton Calendar iconProton Calendar
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Your calendar is a record of your life. Proton Calendar helps keep it private.

More about Proton Calendar
More about Proton Calendar
Proton Calendar alternatives page was last updated Feb 23, 2025
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  1. Clockwise - AI Calendar icon

    Clockwise - AI Calendar

     2 likes
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    Clockwise helps individuals, groups, and companies improve productivity and share their time wisely.

    License model

    • Freemium • Proprietary

    Application type

    Country of Origin

    • US flagUnited States

    Platforms

    • Online
    • Google Chrome
    • Google Calendar
    Clockwise - AI Calendar screenshot 1

    Clockwise - AI Calendar Features

    1.  Calendar Integration
    2. Google Calendar icon  Sync with Google Calendar
    3.  Calendar View
    4.  Appointment Scheduling
    5.  AI-Powered
    6. Google Calendar icon  Google Calendar integration

    Clockwise - AI Calendar VS Proton Calendar

     
  2. Zoho Calendar icon

    Zoho Calendar

     2 likes
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    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...

    License model

    • Free • Proprietary

    Application type

    Country of Origin

    • IN flagIndia

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Apple Watch
    Zoho Calendar screenshot 1

    Zoho Calendar Features

    1.  Reminders
    2.  CalDAV Server
    3.  Shared Calendar
    4.  Compatible with Google Calendar
    5.  Appointment Scheduling
    6.  Scheduling

    Zoho Calendar VS Proton Calendar

     
  4. Vimcal Calendar icon

    Vimcal Calendar

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    Your calendar, on steroids. Enhance your productivity and organise your time with Vimcal touted to be the quickest and fastest calendar app ever.

    License model

    • Free • Proprietary

    Application type

    Country of Origin

    • US flagUnited States

    Platforms

    • Mac
    • Online
    • iPhone
    Vimcal Calendar screenshot 1

    Vimcal Calendar Features

    1.  Calendar View
    2.  Calendar Integration
    3.  AI-Powered
    4. Microsoft Outlook icon  Outlook integration

    Vimcal Calendar VS Proton Calendar

     
  5. Ad
    Screenshot
    Notion Calendar icon
    Notion Calendar

    Experience a fully integrated calendar with Notion, syncing events from Google Calendar, offering built-in scheduling, time zone support, and the ability to connect multiple accounts. Manage all events, personal and work, with a ...

    https://www.notion.so
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  6. Calendar icon

    Calendar

     18 likes
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    Calendar, part of Office Online , is a time-management web application by Microsoft.

    60 Calendar alternatives

    License model

    • Free • Proprietary

    Application types

    Country of Origin

    • US flagUnited States

    Platforms

    • Online
    The calendar

    Calendar Features

    1.  Reminders
    2.  Shared Calendar

    Calendar VS Proton Calendar

     
  7. Merkuro Calendar icon

    Merkuro Calendar

     8 likes
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    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.

    License model

    • Free • Open Source

    Application types

    Country of Origin

    • DE flagGermany
    • European Union flagEU

    Platforms

    • Linux
    Merkuro Calendar screenshot 1

    Properties

    1.  Privacy focused

    Features

    1. Google Calendar icon  Sync with Google Calendar
    2.  Calendar Integration
    3.  No Tracking
    4.  No registration required
    5.  Dark Mode
    6.  Ad-free
    7.  Recurring Tasks
    8.  Reminders
    9. KDE Plasma icon  KDE Plasma integration
    10.  KDE
    11.  Calendar Sync

    Merkuro Calendar VS Proton Calendar

     
  8. aCalendar icon

    aCalendar

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

    44 aCalendar alternatives

    License model

    • Freemium • Proprietary

    Application type

    Country of Origin

    • DE flagGermany
    • European Union flagEU

    Platforms

    • Android
    Full Monthly View

    aCalendar Features

    1. Google Calendar icon  Sync with Google Calendar
    2.  Calendar View
    3.  Reminders
    4.  Multiple Account support
    5.  Recurring Tasks
    6.  Calendar Sync
    7.  Multiple languages

    aCalendar VS Proton Calendar

     
  10. Rise Calendar icon

    Rise Calendar

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    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...

    License model

    Application types

    Platforms

    • Online
    Rise Calendar screenshot 1

    Rise Calendar Features

    1.  Calendar View
    2.  Multiple Account support
    3.  AI-Powered
    4.  Support for Keyboard Shortcuts

    Rise Calendar VS Proton Calendar

     
  11. Clendar icon

    Clendar

     1 like
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    A universal Apple-platform calendar app. Written in SwiftUI.

    License model

    • Freemium • Open Source

    Application type

    Country of Origin

    • VN flagVietnam

    Platforms

    • Mac
    • iPhone
    • iPad
    Clendar screenshot 1

    Properties

    1.  Minimalistic

    Features

    1.  Dark Mode
    2.  iOS widget
    3.  Natural Language Processing

    Clendar VS Proton Calendar

     
  12. Feber icon

    Feber

     1 like
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    A simple, self-hostable group calendar. Feber is a single PHP file (+assets) that runs on virtually every webhost.

    License model

    • Free • Open Source

    Application type

    Country of Origin

    • AT flagAustria
    • European Union flagEU

    Platforms

    • Self-Hosted
    • YunoHost
    Feber screenshot 1

    Properties

    1.  Lightweight

    Features

    1.  Dark Mode
    2.  Calendar View
    3.  Event management
    4.  File Based Storage
    5.  User Management
    6.  No database needed

    Feber VS Proton Calendar

     
  13. TheDayBefore icon

    TheDayBefore

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    With The Day Before, you won't miss precious moments in your busy daily life.

    License model

    • Freemium • Proprietary

    Application type

    Country of Origin

    • US flagUnited States

    Platforms

    • Android
    • iPhone
    • Android Tablet
    • iPad
    TheDayBefore screenshot 1
    TheDayBefore screenshot 2
    TheDayBefore screenshot 3

    TheDayBefore Features

    1.  Recurring Tasks
    2.  Reminders
    3.  Works Offline

    TheDayBefore VS Proton Calendar

     
  14. Calendar Buddy icon

    Calendar Buddy

     1 like
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    Your daily schedule is created from your logged Activities. Comfortably browse what activities you have planned for the day on the main “day” page. Watch them light up as you go through your day and collect streaks for each day you plan.

    License model

    • Freemium • Proprietary

    Application type

    Platforms

    • iPhone
    • iPad
    Calendar Buddy screenshot 1
    Calendar Buddy screenshot 2
    Calendar Buddy screenshot 3

    Calendar Buddy Features

    1.  Timer

    Calendar Buddy VS Proton Calendar

     
  15. Calindori icon

    Calindori

     1 like
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    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.

    License model

    • Free • Open Source

    Application type

    Country of Origin

    • DE flagGermany
    • European Union flagEU

    Platforms

    • Linux
    • KDE
    • Linux Mobile
    • Plasma Mobile
    Calindori screenshot 1

    Calindori VS Proton Calendar

     
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