Open Source Nextcloud Calendar AlternativesCalendar Apps like Nextcloud Calendar

The best open source alternative to Nextcloud Calendar is Tuta Mail. If that doesn't suit you, our users have ranked more than 25 alternatives to Nextcloud Calendar and 12 is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Nextcloud Calendar are Fossify Calendar, Tuta Calendar, Etar and Right Calendar.

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Alternatives list

  1. Tuta Mail icon

    Tuta Mail

     532 likes

    Offers comprehensive encryption for email, calendar, and contacts with zero personal info required. Built on open source, install via Play Store, F-Droid, or APK, with Tor and VPN support. Both free and paid plans; utilizes quantum-resistant encryption ensuring privacy-focused, anonymous usage.

    103 Tuta Mail alternatives

    Cost / License

    Application types

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • iPad
    • Flathub
    • F-Droid
    Tuta Mail screenshot 1
     
  4. Tuta Calendar icon

    Tuta Calendar

     37 likes

    Tuta Calendar offers secure event organization with end-to-end encryption and no ads or tracking. Enjoy multi-device sync, multiple calendar views, and offline access. Fully compliant with strict German data protection laws. Manage recurring events, unlimited calendars, and seamlessly integrate with Tuta Mail.

    Cost / License

    Application type

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • F-Droid
    Tuta Calendar screenshot 1
     
  5. Etar icon

    Etar

     85 likes

    Material design open source calendar for Android.

    49 Etar alternatives

    Cost / License

    Application type

    Platforms

    • Android
    • Android Tablet
    • F-Droid
    Etar screenshot 1
     
  6. Right Calendar icon

    Right Calendar

     9 likes

    Right Calendar app is a versatile scheduling tool that offers unparalleled flexibility to its users. One of its standout features is that it is built on an open-source platform. This not only ensures transparency but also allows for constant updates and bug fixes from a...

    Cost / License

    Application type

    Platforms

    • Android
    Right Calendar screenshot 1
     
  7. fruux icon

    fruux

     36 likes

    fruux is a free service that takes care of your contacts, calendars and more so you don't have to. Never manually copy contacts and calenders between your devices again!

    57 fruux alternatives

    Cost / License

    • Freemium
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Blackberry
    • Windows Phone
    • iPad
    • Blackberry 10
    • Sailfish OS
    • Software as a Service (SaaS)
    fruux screenshot 1
     
  9. Calendar Lock PEA icon

    Calendar Lock PEA

     17 likes

    Calendar encryption: View calendars and stores them encrypted on your device or in the cloud.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    week view
     
  10. Merkuro Calendar icon

    Merkuro Calendar

     11 likes

    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.

    Cost / License

    • Free
    • Open Source

    Application types

    Platforms

    • Linux
    • Flathub
    • Flatpak
    Merkuro Calendar screenshot 1
     
  11. Baïkal icon

    Baïkal

     33 likes

    CalDAV and CardDAV server for calendar and contact data based on PHP, SQLite/MySQL, and SabreDAV

    12 Baïkal alternatives

    Cost / License

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • BSD
    • Windows Phone
    • iPad
    • MySQL Community Edition
    • Self-Hosted
    • NGINX
    • Apache HTTP Server
    • PHP
    • UberSpace
    • SQLite
    Dashboard
     
  12. KashCal icon

    KashCal

     2 likes

    A privacy-first calendar that works offline and looks beautiful. Connect to iCloud — or don't. Your schedule, your choice.

    Cost / License

    • Free
    • Open Source

    Platforms

    • Android
    • F-Droid
    KashCal screenshot 1
     
  13. Feber icon

    Feber

     2 likes

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

    Cost / License

    Application type

    Platforms

    • Self-Hosted
    • YunoHost
    Feber screenshot 1
     
  14. Calindori icon

    Calindori

     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
    Calindori screenshot 1
     
12 of 12 Nextcloud Calendar alternatives