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GNOME Calendar alternatives: 4 apps ranked by verified data

Facts checked Oct 25, 2026AppBreakup editorialHow we rank

Common reasons people leave GNOME Calendar: linux only, and no tasks or scheduling links. We ranked 4 alternatives by how directly each one replaces GNOME Calendar, then by reviews, real visits and how recently each app's facts were checked against its own website. KOrganizer currently ranks first.

Quick comparison

#AppPricingOpen sourcePlatformsVerified factsScore
1KOrganizer logoKOrganizerOpen sourceYesLinux4 of 466.5
2Morgen logoMorgenPaidNoWeb, Windows, macOS +35 of 562.6
3Proton Calendar logoProton CalendarFree plan + paidYesWeb, iOS, Android +34 of 459.6
4Tuta Calendar logoTuta CalendarFree plan + paidYesWeb, iOS, Android +34 of 457.2
  1. KOrganizer logo

    1. KOrganizerTop pick

    Best for: KDE Plasma users who want a configurable desktop calendar with tasks and journals

    Open sourceLinux

    66.5

    score / 100

    Why switch from GNOME Calendar

    KDE's more feature-rich calendar with tasks and journal entries.

    Pros

    • Events, to-dos and journal in one app
    • Integrates with KMail and the Kontact suite
    • Supports CalDAV, Google and groupware servers

    Cons

    • Dense, old-fashioned interface
    • Akonadi backend can be heavy to run and configure
    • Pulls in many KDE dependencies on other desktops
    Visit KOrganizer Details and reviews
    How this score is calculated
    Editorial fit ×0.3100
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.1585
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is KOrganizer a good GNOME Calendar alternative?

    Verified facts

    4 of 4 verified
    License
    GPL-2.0+
    Checked Oct 25, 2026apps.kde.org(opens source in a new tab)
    Part of
    Kontact suite
    Checked Oct 25, 2026apps.kde.org(opens source in a new tab)
    Features
    Events, tasks, alarms, web export
    Checked Oct 25, 2026apps.kde.org(opens source in a new tab)
    Platform
    Linux
    Checked Oct 25, 2026apps.kde.org(opens source in a new tab)
  2. Morgen logo

    2. Morgen

    Best for: Professionals who want calendars and tasks from several tools planned in one place

    PaidWeb, Windows, macOS, Linux, iOS, Android

    62.6

    score / 100

    Why switch from GNOME Calendar

    Commercial cross-platform calendar with a strong Linux app and tasks.

    Pros

    • Desktop apps for Windows, Mac and Linux
    • Brings tasks from many tools onto the calendar
    • AI planning you can accept or tweak

    Cons

    • No free plan after the trial
    • Monthly billing costs twice the yearly rate
    • Planner features take time to set up well
    Visit Morgen Details and reviews
    How this score is calculated
    Editorial fit ×0.387
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.1585
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Morgen a good GNOME Calendar alternative?

    Verified facts

    5 of 5 verified
    Pro price
    $15/month billed yearly ($30 monthly)
    Checked Oct 25, 2026morgen.so(opens source in a new tab)
    Team plan
    $10 per seat/month billed yearly, 2 seats minimum
    Checked Oct 25, 2026morgen.so(opens source in a new tab)
    Free trial
    14 days, no card
    Checked Oct 25, 2026morgen.so(opens source in a new tab)
    Platforms
    Windows, Mac, Linux, web, mobile
    Checked Oct 25, 2026morgen.so(opens source in a new tab)
    Users
    248,000+ professionals
    Checked Oct 25, 2026morgen.so(opens source in a new tab)
  3. Proton Calendar logo

    3. Proton Calendar

    Best for: Privacy-minded people and teams who want encrypted calendars, ideally with Proton Mail

    Free plan + paidOpen sourceWeb, iOS, Android, macOS, Windows, Linux

    59.6

    score / 100

    Why switch from GNOME Calendar

    Encrypted calendar with a Linux desktop app.

    Pros

    • End-to-end encrypted event details
    • Swiss jurisdiction and open-source apps
    • Free plan, bundled with Proton Mail on paid plans

    Cons

    • No direct CalDAV sync with third-party clients
    • Fewer integrations than Google Calendar
    • Best value only if you use other Proton apps
    Visit Proton Calendar Details and reviews
    How this score is calculated
    Editorial fit ×0.377
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.1585
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Proton Calendar a good GNOME Calendar alternative?

    Verified facts

    4 of 4 verified
    End-to-end encryption
    Yes
    Checked Oct 25, 2026proton.me(opens source in a new tab)
    Jurisdiction
    Switzerland
    Checked Oct 25, 2026proton.me(opens source in a new tab)
    Desktop apps
    macOS, Windows, Linux
    Checked Oct 25, 2026proton.me(opens source in a new tab)
    Free plan
    Yes
    Checked Oct 25, 2026proton.me(opens source in a new tab)
  4. Tuta Calendar logo

    4. Tuta Calendar

    Best for: Privacy-focused users who want an encrypted calendar with open-source apps

    Free plan + paidOpen sourceWeb, iOS, Android, Windows, macOS, Linux

    57.2

    score / 100

    Why switch from GNOME Calendar

    Encrypted calendar with an open-source Linux client.

    Pros

    • Encrypted calendar with open-source clients
    • Apps on every major platform, including Linux
    • Android APK available outside Google Play

    Cons

    • Free plan limited to one calendar
    • No CalDAV sync with other calendar apps
    • Basic features compared with mainstream calendars
    Visit Tuta Calendar Details and reviews
    How this score is calculated
    Editorial fit ×0.369
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.1585
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Tuta Calendar a good GNOME Calendar alternative?

    Verified facts

    4 of 4 verified
    Mobile apps
    Free, Android and iPhone
    Checked Oct 25, 2026tuta.com(opens source in a new tab)
    Desktop clients
    Open source for Windows, macOS, Linux
    Checked Oct 25, 2026tuta.com(opens source in a new tab)
    Free plan calendars
    1
    Checked Oct 25, 2026tuta.com(opens source in a new tab)
    Android APK
    Available from GitHub
    Checked Oct 25, 2026tuta.com(opens source in a new tab)

The best GNOME Calendar alternative for…

The highest-ranked app in this list for each need.

KOrganizer logo

Best GNOME Calendar alternative for most people

KOrganizer

KDE's more feature-rich calendar with tasks and journal entries.

KOrganizer logo

Best GNOME Calendar alternative for a free option

KOrganizer

KDE's more feature-rich calendar with tasks and journal entries.

Proton Calendar logo

Best GNOME Calendar alternative for a free plan you can upgrade

Proton Calendar

Encrypted calendar with a Linux desktop app.

Tuta Calendar logo

Best GNOME Calendar alternative for open source

Tuta Calendar

Encrypted calendar with an open-source Linux client.

Morgen logo

Best GNOME Calendar alternative for Mac

Morgen

Commercial cross-platform calendar with a strong Linux app and tasks.

Morgen logo

Best GNOME Calendar alternative for Windows

Morgen

Commercial cross-platform calendar with a strong Linux app and tasks.

KOrganizer logo

Best GNOME Calendar alternative for Linux

KOrganizer

KDE's more feature-rich calendar with tasks and journal entries.

Morgen logo

Best GNOME Calendar alternative for iPhone and Android

Morgen

Commercial cross-platform calendar with a strong Linux app and tasks.

Morgen logo

Best GNOME Calendar alternative for working in the browser

Morgen

Commercial cross-platform calendar with a strong Linux app and tasks.

GNOME Calendar alternatives: common questions

What is the best alternative to GNOME Calendar?

KOrganizer ranks first right now. KDE's more feature-rich calendar with tasks and journal entries. Morgen and Proton Calendar follow it in our ranking.

Is there a free alternative to GNOME Calendar?

Yes. KOrganizer (open source), Proton Calendar (free plan + paid) and Tuta Calendar (free plan + paid) have a free option. Check each app's verified facts for current plan limits.

Is there an open-source alternative to GNOME Calendar?

Yes: KOrganizer, Proton Calendar and Tuta Calendar.

Which GNOME Calendar alternatives work on Linux?

KOrganizer, Morgen, Proton Calendar and Tuta Calendar run on Linux.

Why do people switch from GNOME Calendar?

The complaints we hear most: linux only; no tasks or scheduling links; fewer options than KOrganizer or Thunderbird.

How is this list ranked?

Every app is scored with the same published formula: how directly it replaces GNOME Calendar, reviews (weighted by verification), visits from AppBreakup, how recently its facts were checked against its own website, and reader votes.