Self-hosted / open sourceDatabase & Data ManagementHeadquarters: US

JanusGraph: sovereignty score and 8 European alternatives

JanusGraph is a distributed, transactional graph database for very large graphs that span multi-machine clusters. It is released under the Apache 2.0 licence and is governed by The Linux Foundation, a non-profit organisation. The project page describes it as fully open source and lists several storage backends, including Google Cloud Bigtable. Downloads and installation paths point to self-managed deployment, and the project page does not describe a hosted JanusGraph service. Development on the main branch continues.

Because the software is open source and has no single commercial licence holder, a European organisation can run it on its own infrastructure and keep control of where graph data is stored. Sovereignty depends on the chosen storage and cloud backends, not on the database itself: a deployment on EU-based infrastructure keeps data in the EU, while a managed storage service from a foreign provider reintroduces that provider's jurisdiction. JanusGraph is a practical option for teams that want to replace proprietary graph database licences with a self-operated stack.

See the 8 European alternatives ↓Assess your stack with JanusGraph 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	Database & Data Management
Type	Product
Website	janusgraph.org ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to JanusGraph

The European alternatives to JanusGraph 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

13 European Database & Data Management 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 JanusGraph

JanusGraph 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.

JanusGraph 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.

JanusGraph 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 JanusGraph 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 JanusGraph?

It depends on your use case. Strong EU alternatives to JanusGraph include Aiven, ArangoDB and DuckDB. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to JanusGraph?

Yes. Open-source EU alternatives to JanusGraph include DuckDB, Elastic, Firebird SQL and Meilisearch. These keep your data fully under your own control and let you self-host if you want to.

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

JanusGraph 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 Database & Data Management

Database & Data Management: Database systems, data warehousing, managed database services and data platforms. 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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