Skip to content
ToolGPA

CalenGoo alternatives · Calendar

Open-source alternatives to CalenGoo

CalenGoo is not described as open source on its own site. 11 of the 75 other calendar and scheduling apps in this directory are open source, according to their own sites.

CalenGoo is a paid product with a free trial, starting at $5.99 one-time for Android; $6.99 for iOS; $49.99 for the desktop app. All of them are free or have a free plan.

11 tools · Listings checked up to Oct 9, 2026 · Where the facts come from

How each one differs from CalenGoo

  1. GNOME Calendar

    Free, open-source calendar app for the GNOME desktop on Linux

    • GNOME Calendar is free. CalenGoo starts at $5.99 one-time for Android; $6.99 for iOS; $49.99 for the desktop app.
    • GNOME Calendar has a free plan. CalenGoo does not, though it has a free trial.
    • Only CalenGoo lists iOS, Android, Windows and macOS apps.
    • GNOME Calendar is open source, according to its own site.
    GNOME Calendar vs CalenGooGNOME Calendar pricing and details

  2. Merkuro Calendar

    Open-source calendar and task app from KDE for Linux

    • Merkuro Calendar is free. CalenGoo starts at $5.99 one-time for Android; $6.99 for iOS; $49.99 for the desktop app.
    • Merkuro Calendar has a free plan. CalenGoo does not, though it has a free trial.
    • Only CalenGoo lists iOS, Android, Windows and macOS apps.
    • Merkuro Calendar is open source, according to its own site.
    Merkuro Calendar vs CalenGooMerkuro Calendar pricing and details

  3. Fossify Calendar

    Open-source Android calendar with no ads, tracking or account

    • Fossify Calendar is free. CalenGoo starts at $5.99 one-time for Android; $6.99 for iOS; $49.99 for the desktop app.
    • Fossify Calendar has a free plan. CalenGoo does not, though it has a free trial.
    • Only CalenGoo lists iOS, Windows, macOS and Linux apps.
    • Fossify Calendar is open source, according to its own site.
    Fossify Calendar pricing and details

  4. Etar

    Open-source Material Design calendar for Android

    • Etar is free. CalenGoo starts at $5.99 one-time for Android; $6.99 for iOS; $49.99 for the desktop app.
    • Etar has a free plan. CalenGoo does not, though it has a free trial.
    • Only CalenGoo lists iOS, Windows, macOS and Linux apps.
    • Etar is open source, according to its own site.
    Etar pricing and details

  5. Proton Calendar

    End-to-end encrypted calendar from the maker of Proton Mail

    • Proton Calendar starts at $3.99 per month, billed every 12 months ($47.88); $4.99 billed monthly. CalenGoo starts at $5.99 one-time for Android; $6.99 for iOS; $49.99 for the desktop app.
    • Proton Calendar has a free plan. CalenGoo does not, though it has a free trial.
    • Only Proton Calendar lists a web app.
    • Proton Calendar is open source and end-to-end encrypted, according to its own site.
    Proton Calendar pricing and details

  6. Tuta Calendar

    End-to-end encrypted calendar bundled with Tuta Mail

    • Tuta Calendar starts at €3 per month, paid yearly (€3.60 paid monthly). CalenGoo starts at $5.99 one-time for Android; $6.99 for iOS; $49.99 for the desktop app.
    • Tuta Calendar has a free plan. CalenGoo does not, though it has a free trial.
    • Only Tuta Calendar lists a web app.
    • Tuta Calendar is open source and end-to-end encrypted, according to its own site.
    Tuta Calendar pricing and details

  7. Itsycal

    Free, tiny menu bar calendar for the Mac

    • Itsycal is free. CalenGoo starts at $5.99 one-time for Android; $6.99 for iOS; $49.99 for the desktop app.
    • Itsycal has a free plan. CalenGoo does not, though it has a free trial.
    • Only CalenGoo lists iOS, Android, Windows and Linux apps.
    • Itsycal is open source, according to its own site.
    Itsycal pricing and details

  8. MeetingBar

    Free Mac menu bar app that shows and joins your next meeting

    • MeetingBar is free. CalenGoo starts at $5.99 one-time for Android; $6.99 for iOS; $49.99 for the desktop app.
    • MeetingBar has a free plan. CalenGoo does not, though it has a free trial.
    • Only CalenGoo lists iOS, Android, Windows and Linux apps.
    • MeetingBar is open source, according to its own site.
    MeetingBar pricing and details

  9. Timeful

    Free, open-source group availability poll with calendar autofill

    • Timeful is free. CalenGoo starts at $5.99 one-time for Android; $6.99 for iOS; $49.99 for the desktop app.
    • Timeful has a free plan. CalenGoo does not, though it has a free trial.
    • Only Timeful lists a web app.
    • Only CalenGoo lists iOS, Android, Windows, macOS and Linux apps.
    Timeful pricing and details

  10. Rallly

    Open-source meeting polls for finding a time that suits a group

    • Rallly starts at $6 per seat / month, billed yearly ($10 billed monthly). CalenGoo starts at $5.99 one-time for Android; $6.99 for iOS; $49.99 for the desktop app.
    • Rallly has a free plan. CalenGoo does not, though it has a free trial.
    • Only Rallly lists a web app.
    • Only CalenGoo lists iOS, Android, Windows, macOS and Linux apps.
    Rallly pricing and details

  11. Crab Fit

    Free, open-source availability heat map for group events

    • Crab Fit is free. CalenGoo starts at $5.99 one-time for Android; $6.99 for iOS; $49.99 for the desktop app.
    • Crab Fit has a free plan. CalenGoo does not, though it has a free trial.
    • Only Crab Fit lists a web app.
    • Only Crab Fit lists a browser extension.
    Crab Fit pricing and details

Common questions

Is there an open-source alternative to CalenGoo?

Yes. GNOME Calendar, Merkuro Calendar, Fossify Calendar, Etar, Proton Calendar, Tuta Calendar, Itsycal, MeetingBar and 3 more are open source, according to their own sites.

Is CalenGoo open source?

CalenGoo is not described as open source on its own site. The listing was checked on Oct 9, 2026 against the pages it cites.

When was this checked?

Each listing shows its own date. On this page they run from Oct 5, 2026 to Oct 9, 2026. Vendors change prices and plans without notice, so confirm on their site before you buy.

This page is built from the listings. A tool is here because its listing says so, and the order is how close each is to CalenGoo: the alternatives its listing names first, then the tools that share the most features with it.