EU Sovereignty Score
Self-hosted / open sourceFeature Flagging & ExperimentationHeadquarters: US

flagd: sovereignty score and 8 European alternatives

flagd is an open-source feature flag evaluation engine. It runs as a standalone daemon with no user interface, no management console and no storage layer of its own, and it is configured through a command-line interface. It provides the flag evaluation that OpenFeature-compliant SDKs call, so applications read flags and targeting rules from a single backend. It is intended as a ready-made, OpenFeature-compliant backend for applications that request flags.

The project is released under the Apache 2.0 licence in the open-feature GitHub organisation, which maintains the OpenFeature specification. According to openfeature.dev, OpenFeature is a CNCF incubating project, and the foundation that stewards it is based in the United States. Because flagd is software rather than a hosted service, there is no vendor cloud in which evaluation data is kept. The organisation runs the daemon on its own infrastructure and decides where that infrastructure is located.

See the 8 European alternatives ↓Assess your stack with flagd 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 12, 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
flagd.dev ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to flagd

The European alternatives to flagd 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

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 flagd

flagd 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.

flagd 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.

flagd 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 flagd 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 flagd?

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

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

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

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