Open Source Cal.com AlternativesAppointment Schedulers and other similar apps like Cal.com

The best open source alternative to Cal.com is Thunderbird Appointment. If that doesn't suit you, our users have ranked more than 50 alternatives to Cal.com and six of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Cal.com are Easy!Appointments, Ink-In-Time, meetergo and Meetsy.

filter to find the best alternatives

Cal.com alternatives are mainly Appointment Schedulers, but if you're looking for Calendar Apps you can filter on that. Other popular filters include Open Source. You can also filter by region, for example EU-based alternatives if you prefer software developed in the European Union. These are just examples - use the filter bar below to find more specific alternatives to Cal.com.
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Alternatives list

  1. Thunderbird Appointment makes it easy to find a time to meet. So you can ditch the admin and streamline your day.

    69 Thunderbird Appointment alternatives

    Cost / License

    Application type

    Platforms

    • Online
     
    • Thunderbird Appointment is the most popular Web-based alternative to Cal.com.

    • Thunderbird Appointment is the most popular Open Source & free alternative to Cal.com.

    • Thunderbird Appointment is Free and Open SourceCal.com is Free Personal and Open Source
    • Thunderbird Appointment is Privacy focusedCal.com is not according to our users
  2. Easy!Appointments is a highly customizable web application that allows your customers to book appointments with you via the web. Moreover, it provides the ability to sync your data with Google Calendar so you can use them with other services.

    73 Easy!Appointments alternatives

    Cost / License

    Application type

    Platforms

    • Self-Hosted
    • Cloudron
    • Wordpress
     
    • Easy!Appointments is the most popular Self-Hosted alternative to Cal.com.

    • Easy!Appointments is Free and Open SourceCal.com is Free Personal and Open Source
  3. Ink-In-Time icon
     3 likes

    Appointment scheduling/booking application that aims to be super-simple, and open source!

    Cost / License

    • Free
    • Open Source (MIT)

    Platforms

    • Linux
    • Online
    • Self-Hosted
     
    • Ink-In-Time is the most popular Linux alternative to Cal.com.

    • Ink-In-Time is Free and Open SourceCal.com is Free Personal and Open Source
    • Ink-In-Time is Lightweight and Privacy focusedCal.com is not according to our users
  4. meetergo icon
     3 likes

    AI-powered platform automates appointment booking via email, stores data in Germany for full GDPR compliance, supports team scheduling, payments, reminders, integrations with 90+ services, offers instant setup, multi-language support, and enterprise features.

    Cost / License

    • Freemium (Subscription)
    • Open Source (MIT)

    Application type

    Platforms

    • Online
    • Software as a Service (SaaS)
     
  5. Zaptime icon
     Like

    Personalized scheduling of your meetings and calls. Meet Zaptime! 📅 Connect your Google Calendar or iCloud Calendar, customize your availability, and wave goodbye to double bookings. Your schedule, supercharged!.

    Cost / License

    • Freemium (Subscription)
    • Open Source

    Platforms

    • Online
     
6 of 6 Cal.com alternatives