EU sovereignScheduling & BookingHeadquarters: PL

Calendesk: sovereignty score and 8 European alternatives

Calendesk is appointment scheduling software for individuals, small businesses and companies, with professions such as law, psychology, tutoring, therapy, coaching, nutrition, fitness and beauty among its target groups. Clients book through online calendars, which can be part of a website built with Calendesk or embedded as a widget on an existing site. The product handles payments by card, Apple Pay, Google Pay and bank transfer through Stripe, syncs with Google Calendar and Outlook, and sends reminders by email and SMS. It also covers invoices, subscriptions, passes, recurring bookings, a client database and a REST API. Calendesk is delivered as a SaaS.

The provider is MPR Sp. z o.o., registered in Warsaw, Poland, and no non-European parent company is mentioned. According to Calendesk, its servers and databases stay in the European Union. Its privacy policy lists data centres in Frankfurt and the Netherlands for some of the third-party tools it uses. The software is not open source.

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Sovereignty score

71 / 1000 = high exposure
100 = sovereign

Jurisdiction SOV-2100
Headquartered in the EU: European law applies
Data residency SOV-3100
EU-only hosting
Cryptographic key sovereignty SOV-360
Key management with a European vendor
Freedom from lock-in SOV-640
Closed source: switching requires data migration
Source & runtime sovereignty SOV-4 · SOV-655
Closed source, runtime with the vendor

SOV codes: the matching objective in the European Commission's Cloud Sovereignty Framework. Official source

How the score is calculated

Facts and evidence

Last checked October 5, 2026

Headquarters	PL (EU)Verified by hand
Sovereignty model	Vendor-hosted (EU)Verified by hand
Data hosting	EUVerified by hand
Open-source	NoVerified by hand
GDPR-compliant	YesVendor-stated
Category	Scheduling & Booking
Type	Product
Website	calendesk.com ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to Calendesk

The European alternatives to Calendesk come from our knowledge base of over 6,800 vendors. We only list vendors headquartered in the EU or the EEA; fully European-owned vendors rank before vendors with a foreign owner. For each alternative you see the country, the open-source status and a short description.

Score per alternative: 0 = high exposure, 100 = sovereign

39 European Scheduling & Booking vendors are in the catalogue. View the whole category · Submit an alternative · View category on the map

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Why digital sovereignty matters with Calendesk

Calendesk is headquartered in PL and therefore falls under European law: the GDPR, NIS2 and the Data Act. No foreign legislation can compel access to your data.

Data is hosted exclusively in the EU, so Calendesk scores best on data residency.

Calendesk is closed source and hosted by the vendor. The encryption keys and the runtime sit with the vendor and switching requires data migration. Ask about bring-your-own-key, export options and open standards.

What this means for your organisation depends on your whole stack and context. The free assessment weighs Calendesk together with your other vendors and gives a total score, a heatmap and the main risk drivers.

Frequently asked questions

What is the best European alternative to Calendesk?

It depends on your use case. Strong EU alternatives to Calendesk include Agendize, Billetto and Bokadirekt. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to Calendesk?

Our list of EU alternatives to Calendesk is mostly commercial options. Browse the category on the map for open-source choices.

Is Calendesk GDPR-compliant and where is the data hosted?

Calendesk is headquartered in PL (EU) and hosts data in EU. That makes Calendesk an EU-sovereign choice in its own right; the EU alternatives on this page are comparable European tools.

Details and sources

Verified by handHeadquarters, owner, hosting locations and licence have been checked by us against public sources. Free of charge and for every vendor, not a paid label. Nothing in this knowledge base is taken over automatically. Last checked on October 5, 2026.

Sources

Public sources used in the latest check of this record.

calendesk.com/

Compliance evidence

The links below point to the vendor's own public documents. We only record what we found: a missing link means "not found publicly", not "not compliant".

No public compliance evidence has been recorded for this vendor yet. Do you know its DPA or subprocessor list? Something wrong? Suggest a correction

Digital sovereignty in Scheduling & Booking

Scheduling & Booking: Appointment scheduling, online booking systems and calendar management. In this category the choice of vendor determines who has legal access to your data, where that data lives and how easily you can switch later.

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