Non-EU vendorCMSHeadquarters: NZ

SilverStripe: sovereignty score and 8 European alternatives

Silverstripe CMS is a free, open-source content management system and PHP framework. It offers a web-based admin panel with a WYSIWYG editor, draft and published versions with revision rollback, role-based permissions, multilingual content, image resizing, full-text search and XML sitemaps. The CMS is a module on top of the Silverstripe Framework, an MVC framework with an ORM. You install it yourself on a web server running Apache, nginx or IIS with MySQL or MariaDB. Silverstripe Ltd, the creator of the CMS, also offers Silverstripe Cloud, a hosting platform optimised for the CMS.

Silverstripe CMS and the framework are released under the BSD licence (BSD-3-Clause), so self-hosting is possible without licence fees. A European organisation can therefore run it on its own or on European infrastructure and decide where the data resides. If you choose the managed Silverstripe Cloud, check with the provider which region stores the data and which jurisdiction the provider falls under.

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Sovereignty score

79 / 1000 = high exposure
100 = sovereign

Jurisdiction SOV-250
Headquartered outside the EU (NZ)
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-675
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 9, 2026

Headquarters	NZ (OTHER)Verified by hand
EU adequacy decision	Yes — found adequate by the European CommissionVerified by hand
Sovereignty model	Vendor-hosted (non-EU)Verified by hand
Data hosting	EUVerified by hand
Open-source	YesVerified by hand
GDPR-compliant	YesVendor-stated
Hosting signal	INCAPSULA - Incapsula Inc, US (US)Technically measured
Category	CMS
Type	Product
Website	silverstripe.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 SilverStripe

The European alternatives to SilverStripe 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 SilverStripe

SilverStripe is headquartered in NZ, outside the EU. Contracts and data therefore also fall under non-European law. The GDPR applies through contractual terms, but in a conflict with local legislation you have less certainty than with a European vendor.

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

SilverStripe 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 SilverStripe 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 SilverStripe?

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

Yes. Open-source EU alternatives to SilverStripe 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 SilverStripe GDPR-compliant and where is the data hosted?

SilverStripe is headquartered in NZ (OTHER) and hosts data in 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 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

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: docs.silverstripe.org/en/6/contributing/issues_and_bugs/
Supported versions: docs.silverstripe.org/en/6/project_governance/release_policy/

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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