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Disclaimer: Star Stack provides information about European technology services for educational purposes only. Service listings, sovereignty assessments, and recommendations do not constitute legal, financial, or professional advice. We encourage you to verify all information independently and consult appropriate professionals before making technology decisions. Star Stack is not affiliated with any listed services unless explicitly stated.

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Flagsmith | Star Stack

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Flagsmith

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Flagsmith

Name: Flagsmith
Author: Star Stack

Open source feature flags and remote config service

Feature Flags

Visit Website GitHub 6.6K

About

Flagsmith is an open source platform for managing feature flags and remote configuration across web, mobile, and server applications. It supports granular user segmentation, A/B testing, and self-hosted deployment for teams requiring on-premise control.

Resources

No migration guide is currently listed for this service.

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Sovereignty Score

Recorded assessment version: jurisdiction-ownership-2026-10-04

out of 100

Data completeness50% (Partial)

Jurisdictional(56%)

Mixed jurisdictional situation, some foreign exposure

Jurisdiction: United Kingdom (EU adequacy decision)
No foreign parent provider
Five Eyes intelligence alliance exposure

Ownership(44%)

Partial ownership data, some foreign influence possible

Mixed ownership (<30% non-EU)
Funding: MMC Ventures - London, UK
Bootstrapped stage
Acquisition risk unknown (assumed high) (Submit verified data to improve this score)

More dimensions coming soon

GovernanceComing soon

PortabilityComing soon

LicenseComing soon

CommunityComing soon

How missing data affects scores Submit data corrections

Provider

Bullet Train Limited

Quick Facts

Legal jurisdiction: United Kingdom
Headquarters: United Kingdom
Ownership: Mixed (<30% Non-EU)
License: BSD-3-Clause
Deployment: Self-host
Funding: MMC Ventures - London, UK

Evidence and freshness

Verification date unknown. This assessment needs review.

A score is an assessment of recorded facts. Missing evidence and unresolved ownership can affect the result.

hqCountry: other
Retrieved 30/01/2026, confidence 95%.
Read evidence excerpt
Flagsmith headquarters at 86-90 Paul Street, London, United Kingdom
hqCountry: other
Retrieved 30/01/2026, confidence 95%.
Read evidence excerpt
Flagsmith headquarters at 86-90 Paul Street, London, United Kingdom
hqCountry: other
Retrieved 30/01/2026, confidence 95%.
Read evidence excerpt
Flagsmith headquarters at 86-90 Paul Street, London, United Kingdom