Self-hosted / open sourceCMSHeadquarters: DE

Plone: sovereignty score and 8 European alternatives

Plone is an open-source content management system written in Python and built on the Zope application server. Organisations use it for websites, intranets and portals. Plone works in three ways: classic with server-side templates, with Volto as a React-based interface, or headless with a REST API on which developers build their own frontend. Content types, themes and workflows can be configured through the web and extended by developers. Content is stored by default in the ZODB object database, which can also work with relational databases. Plone runs on Linux, Windows, macOS and in Docker containers, on-premises or in the cloud.

Plone is licensed under the GNU General Public License (GPLv2). The non-profit Plone Foundation holds the trademarks and supports the project. Because the software is open source and can be self-hosted, a European organisation can run Plone on its own or on European infrastructure without depending on a vendor's cloud. Where the data resides then depends on the hosting provider you choose.

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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 July 2, 2026

Headquarters	DE (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
Compliance documents	1 published, see belowVendor-stated
Hosting signal	CLOUDFLARENET - Cloudflare, Inc., US (US)Technically measured
Category	CMS
Type	Product
Website	plone.org ↗

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 Plone

The European alternatives to Plone 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 CMS 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 Plone

Plone is headquartered in DE 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 Plone scores best on data residency.

Plone 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 Plone 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 Plone?

It depends on your use case. Strong EU alternatives to Plone include Ametys, Bolt CMS and caisy. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to Plone?

Yes. Open-source EU alternatives to Plone include Ametys, Bolt CMS, Cockpit CMS, Contao and django CMS. These keep your data fully under your own control and let you self-host if you want to.

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

Plone is headquartered in DE (EU) and hosts data in EU. It is also open-source, so you can self-host it. That makes Plone 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 July 2, 2026.

Sources

This record was checked via the vendor's website and legal notice during the full audit of June and July 2026. Source links have been recorded per record since 20 September 2026.

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".

Security page / trust center: plone.org/security

Provenance of the links above:Vendor-stated

Links checked on September 21, 2026.

Cyber Resilience Act

Public signals that relate to the EU Cyber Resilience Act. They do not count towards the score. A missing line means "not found publicly".

Report a vulnerability: plone.org/security/report
Supported versions: plone.org/download/release-schedule
Organisation behind the open-source project: Plone Foundation

For products in scope of the CRA, CE marking is required from 11 December 2027; this cannot be checked yet.

Checked on October 9, 2026. What is the Cyber Resilience Act?

Digital sovereignty in CMS

CMS: Content management systems — websites, headless CMS, digital experience platforms. 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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