Open Source Self-Hosted Calendly Alternatives

Calendly is not available as a self-hosted solution but there are some alternatives for power users and business that want to host a solution on-premise. The best open source Self-Hosted alternative is Cal.com. It's not free, so if you're looking for a free alternative, you could try Cal.com or Easy!Appointments. If that doesn't suit you, our users have ranked more than 100 alternatives to Calendly and ten of them are open source and available as a self-hosted solution so hopefully you can find a suitable replacement. Other interesting open source Self-Hosted alternatives to Calendly are hash-calendar, Nextcloud Polls, Ink-In-Time and Croodle.

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Alternatives list

  1. Cal.com icon

    Cal.com

     34 likes

    Open-source scheduling tool offering self-hosted or hosted deployment, complete white-label branding, API-driven customization, data ownership, online booking management, flexible embedding, privacy, and integration for business meetings, seminars, and more.

    101 Cal.com alternatives

    Cost / License

    • Free Personal
    • Open Source (MIT)

    Application types

    Platforms

    • Android
    • Self-Hosted
    • Google Chrome
    • Software as a Service (SaaS)
    • Cloudron
    • Windows
    • Mac
    • Linux
    • Safari
    • Mozilla Firefox
    • iPhone
    • Online
    Cal.com screenshot 1
     
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    4
    Cal.com vs Calendly Comments
    Ada Byron
    Positive
    2

    Not dependent on JavaScript and open source. Honestly, more and more businesses are locking down JS to only trusted sites or ones they use internally. Calendly depends on it, and I had some people not be able to use it because of this. Cal provides you the same kind of functionality and is much easier to manager. Calendly does have some added functionality but as I found out

    phytographer
    Positive
    0

    Offers multiple appointment types for free

    tangycandy
    Positive
    0

    Cal.com (formerly Calendly) is the BEST alternative to Calendso that I've tried, and offers additional intergrations. Their free tier is also a lot more generous, and if you want to self-host, there are simple ways of doing so via Railway.

    3 of 4 comments
    • Cal.com is Free Personal and Open SourceCalendly is Freemium and Proprietary
    • Cal.com is Privacy focused and CustomizableCalendly is not according to our users
  2. Easy!Appointments icon

    Easy!Appointments

     10 likes

    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.

    95 Easy!Appointments alternatives

    Cost / License

    Application type

    Platforms

    • Self-Hosted
    • Cloudron
    • Wordpress
    Easy!Appointments screenshot 1
     
  5. Ad
    Screenshot
    Cal.com icon
    Cal.com

    Get a 20% discount on Cal.com with AlternativeTo!

    Open-source scheduling tool offering self-hosted or hosted deployment, complete white-label branding, API-driven customization, data ownership, online booking management, flexible embedding, privacy, and integration for business ...

    https://cal.com
    Learn More
  6. hash-calendar icon

    hash-calendar

     1 like

    lightweight, client-only calendar web application. All data persists in the URL hash for instant sharing, No backend required. Optional AES-GCM password protection keeps shared links locked without a server.

    Cost / License

    • Freemium
    • Open Source (MIT)

    Application type

    Platforms

    • Online
    • Self-Hosted
    • Docker
    • YunoHost
    hash-calendar screenshot 1
     
  8. Nextcloud Polls icon

    Nextcloud Polls

     10 likes

    A polls app, similar to doodle/dudle with the possibility to restrict access (members, certain groups/users, hidden and public).

    Cost / License

    Application type

    Platforms

    • Online
    • Self-Hosted
    Nextcloud Polls screenshot 1
     
  9. Ink-In-Time icon

    Ink-In-Time

     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 screenshot 1
     
  10. C

    Croodle

     2 likes

    Croodle is a web application to schedule a date or to do a poll on a general topics. All data like title and description, number and labels of options and available answers and names of users are encrypted/decrypted in the browser using 256 bits AES.

    Cost / License

    • Free
    • Open Source (MIT)

    Application types

    Platforms

    • Linux
    • Online
    • Self-Hosted
    • PHP
     
  11. Tymeslot icon

    Tymeslot

     1 like

    Tymeslot is a source-available, privacy-first meeting-scheduling platform built with Elixir and Phoenix LiveView. Self-host it on your own infrastructure or let us run it for you — either way, your data stays yours.

    Cost / License

    Application types

    Platforms

    • Online
    • Self-Hosted
    • Cloudron
    • Docker
    Tymeslot screenshot 1
     
  12. Creavi Appointment Booking Calendar icon

    Creavi Appointment Booking Calendar

     1 like

    Creavi is a free, open-source WordPress plugin for scheduling appointments through a customizable booking calendar, with Google and Outlook sync, reminders, custom forms, timezone support, and secure video meetings.

    Cost / License

    Application type

    Platforms

    • Wordpress
    • Self-Hosted
    Gutenberg block
     
  13. DayOtter icon

    DayOtter

     Like

    Open-source, AI-native scheduling platform merges all calendars into a conflict-free system with a single link, team round-robin, routing forms, group polls, reminders across channels, Stripe integration, and self-hostable Docker deployment for private control.

    Cost / License

    Platforms

    • Online
    • Android
    • Self-Hosted
    DayOtter screenshot 1
     
10 of 10 Calendly alternatives