Self-hosted / open sourceFeature Flagging & ExperimentationHeadquarters: US

OpenFeature: sovereignty score and 8 European alternatives

OpenFeature is an open, vendor-neutral specification for feature flagging, complemented by SDKs. Developers use one standardised API to evaluate flag values in their application. So-called providers translate those calls into a concrete system, for example a commercial flag service, a REST API or a local file. This allows a team to switch flag systems without changing application code. The building blocks include an evaluation API, evaluation context, providers, hooks and events. The specification is licensed under Apache 2.

OpenFeature is an incubating project of the Cloud Native Computing Foundation (CNCF), which is part of the Linux Foundation in the United States. The project is software you run in your own applications; there is no vendor service that receives your data. Where flag data is held depends on the provider you choose. For a European organisation, OpenFeature is therefore a way to reduce dependence on a single flag vendor and to be able to use a European or self-hosted flag service.

See the 8 European alternatives ↓Assess your stack with OpenFeature pre-selected

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Sovereignty score

69 / 1000 = high exposure
100 = sovereign

Jurisdiction SOV-210
Headquartered in the US: CLOUD Act and FISA 702
Data residency SOV-3100
No hosting in Europe (US)
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-665
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 11, 2026

Headquarters	US (US)Verified by hand
EU adequacy decision	Only for companies individually certified under the EU-US Data Privacy FrameworkVerified by hand
Sovereignty model	Open-source, distributedVerified by hand
Data hosting	USVerified by hand
Open-source	YesVerified by hand
GDPR-compliant	NoVendor-stated
Category	Feature Flagging & Experimentation
Type	Product
Website	openfeature.dev ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to OpenFeature

The European alternatives to OpenFeature 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

12 European Feature Flagging & Experimentation 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 OpenFeature

OpenFeature is headquartered in the United States. US vendors fall under the CLOUD Act and FISA 702: US authorities can compel access to data, even when that data sits in a European data centre. That is the core of the jurisdictional exposure in our model.

OpenFeature hosts data outside the EU (US). Personal data therefore leaves the EU, which requires a transfer mechanism under the GDPR and pulls the data residency score down.

OpenFeature 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 OpenFeature 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 OpenFeature?

It depends on your use case. Strong EU alternatives to OpenFeature include AB Tasty, ABsmartly and Reflag (Bucket). On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to OpenFeature?

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

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

OpenFeature is headquartered in US and hosts data in US. Its GDPR compliance is limited or unclear. 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 11, 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 Feature Flagging & Experimentation

Feature Flagging & Experimentation: Runtime feature toggles, gradual rollouts and A/B testing infrastructure for software teams. 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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