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One Calendar alternatives · Calendar

Self-hosted alternatives to One Calendar

The One Calendar listing does not say it can be self-hosted. 4 of the 75 other calendar and scheduling apps in this directory can be self-hosted, according to their own sites.

One Calendar has a free plan. Paid plans start at $5.99 one-time per platform (App Store or Google Play). All of them are free or have a free plan.

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

How each one differs from One Calendar

  1. Timeful

    Free, open-source group availability poll with calendar autofill

    • Timeful is free. One Calendar starts at $5.99 one-time per platform (App Store or Google Play).
    • Only Timeful lists a web app.
    • Only One Calendar lists Android, iOS, macOS and Windows apps.
    • Timeful is open source and self-hostable, according to its own site.
    Timeful pricing and details

  2. Cal.com

    Scheduling platform with a free plan, API and embeds

    • Cal.com starts at $12 per user / month, billed yearly ($16 billed monthly). One Calendar starts at $5.99 one-time per platform (App Store or Google Play).
    • Only Cal.com lists a web app.
    • Only Cal.com lists a Linux app.
    • Only Cal.com lists a browser extension.
    Cal.com pricing and details

  3. 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). One Calendar starts at $5.99 one-time per platform (App Store or Google Play).
    • Only Rallly lists a web app.
    • Only One Calendar lists Android, iOS, macOS and Windows apps.
    • Rallly is open source and self-hostable, according to its own site.
    Rallly pricing and details

  4. Crab Fit

    Free, open-source availability heat map for group events

    • Crab Fit is free. One Calendar starts at $5.99 one-time per platform (App Store or Google Play).
    • Only Crab Fit lists a web app.
    • Only Crab Fit lists a browser extension.
    • Only One Calendar lists iOS, macOS and Windows apps.
    Crab Fit pricing and details

Common questions

Is there a self-hosted alternative to One Calendar?

Yes. Timeful, Cal.com, Rallly and Crab Fit can be self-hosted, according to their own sites.

Can One Calendar be self-hosted?

The One Calendar listing does not say it can be self-hosted. 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 4, 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 One Calendar: the alternatives its listing names first, then the tools that share the most features with it.