EU Sovereignty Score
Self-hosted / open sourceCollaborationHeadquarters: AT

DAVx⁵: sovereignty score and 8 European alternatives

DAVx⁵ is an Android app that synchronises contacts, calendars and tasks with servers that speak CalDAV, CardDAV or WebDAV. You enter the details of your own server, and the data then appears in the regular contacts, calendar and task apps on the device. WebDAV file access is also possible. The app is aimed at organisations and individuals who run their own groupware, for example with Nextcloud, and is installed through F-Droid or the commercial app stores.

DAVx⁵ is developed by bitfire web engineering GmbH in Austria and is open source under the GPLv3. In the commercial app stores it is offered for a fee, while the source code stays freely available. According to its privacy policy, the app sends no personal data to the maker's servers and synchronises only with the server you specify, so your data remains under your own control. Support requests are handled in a helpdesk system located in Berlin. Development of the WebDAV Push standard was co-funded through NLnet and the EU's NGI Zero programme.

See the 8 European alternatives ↓Assess your stack with DAVx⁵ pre-selected
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Sovereignty score
94 / 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-390
    Self-hostable: encryption keys under your own control
  • Freedom from lock-in SOV-680
    Open source: low switching costs
  • Source & runtime sovereignty SOV-4 · SOV-6100
    Source code auditable, forkable and self-hostable

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 16, 2026
Headquarters
AT (EU)Verified by hand
Sovereignty model
Open-source, distributedVerified by hand
Data hosting
EUVerified by hand
Open-source
YesVerified by hand
GDPR-compliant
YesVendor-stated
Category
Collaboration
Type
Product
Website
davx5.com ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to DAVx⁵

The European alternatives to DAVx⁵ come from our knowledge base of over 9,500 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

74 European Collaboration 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 DAVx⁵

DAVx⁵ is headquartered in AT 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 DAVx⁵ scores best on data residency.

DAVx⁵ is open source. You can audit the source code, self-host the software and keep the encryption keys under your own control. Switching is easier because data and software are not tied to a single party.

What this means for your organisation depends on your whole stack and context. The free assessment weighs DAVx⁵ 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 DAVx⁵?

It depends on your use case. Strong EU alternatives to DAVx⁵ include Agorakit, ahead Intranet and alfaview. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to DAVx⁵?

Yes. Open-source EU alternatives to DAVx⁵ include Agorakit, AtomicServer, CryptPad and Nextcloud Deck. These keep your data fully under your own control and let you self-host if you want to.

Is DAVx⁵ GDPR-compliant and where is the data hosted?

DAVx⁵ is headquartered in AT (EU) and hosts data in EU. It is also open-source, so you can self-host it. That makes DAVx⁵ 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 16, 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

In the changelog

Earlier changes to this page, as listed in the public changelog.

Digital sovereignty in Collaboration

Collaboration: Team communication, file sharing, video conferencing, document editing. 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 DAVx⁵ — GDPR-compliant & EU-hosted · EU Sovereignty Score