Non-EU vendorScheduling & BookingHeadquarters: US

Google Calendar: sovereignty score and 8 European alternatives

Google Calendar is Google's calendar service for scheduling events, appointments and shared calendars. It is part of Google Workspace, which many organisations use, and runs online in the browser and in apps. Calendar items include event titles and descriptions, dates, times, invitees, locations and attachments.

The service is provided by Google, a subsidiary of Alphabet Inc. headquartered in Mountain View, California, so US law applies to the provider. Google Workspace service terms classify calendar data as 'Located Data' that organisations can place in a Data Region, either the United States or Europe, for eligible editions. Google's data regions documentation states that calendar data at rest is covered in every edition with data regions, while processing in use is covered only in the Enterprise and Assured Controls editions. Outside the chosen region, data can be stored wherever Google maintains facilities, under the Cloud Data Processing Addendum. European organisations should choose the edition and region deliberately.

See the 8 European alternatives ↓Assess your stack with Google Calendar pre-selected

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Sovereignty score

27 / 1000 = high exposure
100 = sovereign

Jurisdiction SOV-210
Headquartered in the US: CLOUD Act and FISA 702
Data residency SOV-350
Hosting inside and outside Europe (US, EU)
Cryptographic key sovereignty SOV-320
Key management with a non-European vendor
Freedom from lock-in SOV-640
Closed source: switching requires data migration
Source & runtime sovereignty SOV-4 · SOV-615
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 10, 2026

Headquarters	US (US)Verified by hand
EU adequacy decision	Only for companies individually certified under the EU-US Data Privacy FrameworkVerified by hand
Sovereignty model	Vendor-hosted (non-EU)Verified by hand
Data hosting	US, EUVerified by hand
Open-source	NoVerified by hand
GDPR-compliant	YesVendor-stated
Category	Scheduling & Booking
Type	Product
Website	calendar.google.com ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to Google Calendar

The European alternatives to Google Calendar 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 Google Calendar

Google Calendar is headquartered in the United States. US vendors fall under the CLOUD Act and FISA 702: US authorities can compel access to data, even when that data sits in a European data centre. That is the core of the jurisdictional exposure in our model.

Google Calendar hosts data in US, EU. Exactly what stays within the EU — and what does not — is defined by the vendor's data processing agreement and sub-processor list, not by a setting you control yourself; check those documents for the precise scope, including backups, logs and support access.

Google Calendar 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 Google Calendar 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 Google Calendar?

It depends on your use case. Strong EU alternatives to Google Calendar 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 Google Calendar?

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

Is Google Calendar GDPR-compliant and where is the data hosted?

Google Calendar is headquartered in US and hosts data in US, EU. The vendor states it is GDPR-compliant, but the data falls under non-EU jurisdiction. For full EU data residency the EU alternatives on this page usually offer more certainty.

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 10, 2026.

Sources

Public sources used in the latest check of this record.

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.

Also in this category

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