EU Sovereignty Score
EU-hosted, non-EU parentScheduling & BookingHeadquarters: CH

Calenso: sovereignty score and 8 European alternatives

Calenso is an appointment-booking platform aimed at consultation-heavy sectors such as insurance, banking, public authorities, law firms, real estate and health insurers, from SMEs to large enterprises. It supports one-to-one, group and conference appointments, video consultations with Calenso-Meet (with integrations for Zoom, Microsoft Teams and Unblu), pre-appointment surveys, automated reminders, analytics, calendar sync, online payment and customisable multilingual booking pages. Calenso is delivered as a SaaS.

Calenso AG is a Swiss company with its team in Lucerne. Since a merger announced in February 2025 it has been part of the jrni group, which has its global headquarters in Boston, United States; this is a US parent and therefore a CLOUD Act signal. Calenso states that it remains an independent Swiss subsidiary, keeps its brand and product, and that data processing stays in Switzerland. According to the vendor, servers and databases are located exclusively in Switzerland, in a data centre with ISO 27001 and BSI C5 certification. The software is not open source.

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Sovereignty score
67 / 1000 = high exposure
100 = sovereign
  • Jurisdiction SOV-2100
    Headquartered in Switzerland: Swiss law, recognised by the EU as adequate
  • Data residency SOV-380
    Hosting in Switzerland only (recognised by the EU as adequate)
  • 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 9, 2026
Headquarters
CH (EU)Verified by hand
Ultimate parent company
USVerified by hand
Sovereignty model
Vendor-hosted (EU)Verified by hand
Data hosting
CHVerified by hand
Open-source
NoVerified by hand
GDPR-compliant
YesVendor-stated
Hosting signal
SOPRADO-ANY - SOPRADO GmbH, DE (DE)Technically measured
Category
Scheduling & Booking
Type
Product
Website
calenso.com ↗

The hosting signal shows the network that serves the vendor's website, often a CDN, and not necessarily where the service or your data is hosted. How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to Calenso

The European alternatives to Calenso 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 Calenso

Calenso is headquartered in Switzerland and falls under Swiss law, including the revised Swiss data protection act. Switzerland is not an EU member, but the European Commission recognises its level of data protection as adequate. Its Swiss headquarters does not by itself bring it under US legislation such as the CLOUD Act. The ultimate owner is based in US. Foreign control undermines part of the certainty a European headquarters offers.

Calenso hosts data in Switzerland only. Switzerland is not part of the EU or the EEA, so the GDPR does not apply there directly; the European Commission does recognise Swiss data protection as adequate, so personal data can go there without extra safeguards. Our model therefore scores it between EU hosting and hosting outside Europe. If you require strictly EU hosting, take this into account.

Calenso 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 Calenso 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 Calenso?

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

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

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

Calenso is headquartered in CH (EFTA) and hosts data in CH. That makes Calenso 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 9, 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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8 European alternatives to Calenso — GDPR-compliant & EU-hosted · EU Sovereignty Score