EU Sovereignty Score
Self-hosted / open sourceOffice & ProductivityHeadquarters: DE

Okular: sovereignty score and 8 European alternatives

Okular is a universal document viewer from KDE. The program opens PDF, ePub, DjVU and Markdown documents, comics and common image formats, and for PDFs it offers annotation, text selection and verification of digital signatures. Okular is installed as desktop software on the user's own computer and is released under the GPL version 2 or later, so there is no licence fee. It is a free alternative to Adobe Reader for reading and annotating PDF files.

Okular is developed by the KDE community; legally the project is represented by the non-profit association KDE e.V., whose registered office is in Berlin. Because it is desktop software without a hosted service, documents stay on the user's device, and the source code can be inspected publicly. The privacy policy for KDE applications is published on kde.org. For a European organisation, Okular is therefore an option to read and verify documents without sending them to a foreign cloud provider; the association is subject to German law.

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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 12, 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
NoVendor-stated
Category
Office & Productivity
Type
Product
Website
okular.kde.org ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to Okular

The European alternatives to Okular come from our knowledge base of over 8,000 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

34 European Office & Productivity 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 Okular

Okular 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 Okular scores best on data residency.

Okular 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 Okular 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 Okular?

It depends on your use case. Strong EU alternatives to Okular include Ashampoo Office, Calligra Suite and Craft Docs. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to Okular?

Yes. Open-source EU alternatives to Okular include Calligra Suite, CryptPad, EGroupware, Euro-Office, eXo Platform and Framasoft (Framapad/Framacalc). These keep your data fully under your own control and let you self-host if you want to.

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

Okular is headquartered in DE (EU) and hosts data in EU. It is also open-source, so you can self-host it. That makes Okular 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 12, 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 Office & Productivity

Office & Productivity: Office software, word processing, spreadsheets and groupware. 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.

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8 European alternatives to Okular — GDPR-compliant & EU-hosted · EU Sovereignty Score