EU Sovereignty Score
Self-hosted / open sourceIdentityHeadquarters: DE

Nubus: sovereignty score and 8 European alternatives

Nubus is an open-source identity and access management platform from Univention. It combines a central directory for users, groups and roles with single sign-on through protocols such as OpenID Connect and SAML, optional multi-factor authentication, and a portal where staff find the applications they may use and manage their own accounts. A REST API and SCIM connect further applications. Nubus is delivered as software for Kubernetes or as a virtual machine based on Univention Corporate Server (UCS).

Univention GmbH is based in Bremen, Germany, and develops Nubus. The source code is open source under the AGPL-3.0. You run Nubus yourself, on your own servers, in a private cloud or through a service provider of your choice, so identity data stays under your control. Univention also offers support and service-level agreements. Nubus is also the identity component of openDesk, the sovereign workplace for public administrations. It is not a SaaS service run by the vendor itself.

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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 14, 2026
Headquarters
DE (EU)Verified by hand
Data hosting
Self-hosted, e.g. in EU (your choice)Verified by hand
Open-source
YesVerified by hand
GDPR-compliant
YesVendor-stated
Category
Identity
Type
Product
Website
univention.com ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to Nubus

The European alternatives to Nubus come from our knowledge base of over 8,400 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

95 European Identity 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 Nubus

Nubus 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 Nubus scores best on data residency.

Nubus 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 Nubus 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 Nubus?

It depends on your use case. Strong EU alternatives to Nubus include Adnovum, Aegis Authenticator and AirID. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to Nubus?

Yes. Open-source EU alternatives to Nubus include Aegis Authenticator. These keep your data fully under your own control and let you self-host if you want to.

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

Nubus is headquartered in DE (EU) and hosts data in EU. It is also open-source, so you can self-host it. That makes Nubus 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 14, 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 Identity

Identity: Identity and access management — SSO, MFA, directory services. 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 Nubus — GDPR-compliant & EU-hosted · EU Sovereignty Score