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When2meet alternatives · Calendar

Open-source alternatives to When2meet

When2meet 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.

When2meet is free to use. 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 When2meet

  1. 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). When2meet is free.
    • Rallly is open source and self-hostable, according to its own site.
    • When2meet also covers calendar and surveys.
    Rallly vs When2meetRallly pricing and details

  2. Crab Fit

    Free, open-source availability heat map for group events

    • Crab Fit is free. When2meet is free.
    • Only Crab Fit lists an Android app.
    • Only Crab Fit lists a browser extension.
    • Crab Fit is open source and self-hostable, according to its own site.
    Crab Fit vs When2meetCrab Fit pricing and details

  3. Timeful

    Free, open-source group availability poll with calendar autofill

    • Timeful is free. When2meet is free.
    • Timeful is open source and self-hostable, according to its own site.
    Timeful vs When2meetTimeful pricing and details

  4. 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. When2meet is free.
    • Only Proton Calendar lists macOS, Windows, Linux, iOS and Android apps.
    • Proton Calendar is open source and end-to-end encrypted, according to its own site.
    • Proton Calendar also covers booking links.
    Proton Calendar pricing and details

  5. Tuta Calendar

    End-to-end encrypted calendar bundled with Tuta Mail

    • Tuta Calendar starts at €3 per month, paid yearly (€3.60 paid monthly). When2meet is free.
    • Only Tuta Calendar lists macOS, Windows, Linux, iOS and Android apps.
    • Tuta Calendar is open source and end-to-end encrypted, according to its own site.
    • When2meet also covers surveys.
    Tuta Calendar pricing and details

  6. Itsycal

    Free, tiny menu bar calendar for the Mac

    • Itsycal is free. When2meet is free.
    • Only Itsycal lists a macOS app.
    • Only When2meet lists a web app.
    • Itsycal is open source, according to its own site.
    Itsycal pricing and details

  7. MeetingBar

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

    • MeetingBar is free. When2meet is free.
    • Only MeetingBar lists a macOS app.
    • Only When2meet lists a web app.
    • MeetingBar is open source, according to its own site.
    MeetingBar pricing and details

  8. Fossify Calendar

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

    • Fossify Calendar is free. When2meet is free.
    • Only Fossify Calendar lists an Android app.
    • Only When2meet lists a web app.
    • Fossify Calendar is open source, according to its own site.
    Fossify Calendar pricing and details

  9. Etar

    Open-source Material Design calendar for Android

    • Etar is free. When2meet is free.
    • Only Etar lists an Android app.
    • Only When2meet lists a web app.
    • Etar is open source, according to its own site.
    Etar pricing and details

  10. GNOME Calendar

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

    • GNOME Calendar is free. When2meet is free.
    • Only GNOME Calendar lists a Linux app.
    • Only When2meet lists a web app.
    • GNOME Calendar is open source, according to its own site.
    GNOME Calendar pricing and details

  11. Merkuro Calendar

    Open-source calendar and task app from KDE for Linux

    • Merkuro Calendar is free. When2meet is free.
    • Only Merkuro Calendar lists a Linux app.
    • Only When2meet lists a web app.
    • Merkuro Calendar is open source, according to its own site.
    Merkuro Calendar pricing and details

Common questions

Is there an open-source alternative to When2meet?

Yes. Rallly, Crab Fit, Timeful, Proton Calendar, Tuta Calendar, Itsycal, MeetingBar, Fossify Calendar and 3 more are open source, according to their own sites.

Is When2meet open source?

When2meet is not described as open source on its own site. The listing was checked on Oct 5, 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 When2meet: the alternatives its listing names first, then the tools that share the most features with it.