EU Sovereignty Score
Self-hosted / open sourceAPI ManagementHeadquarters: DE

Fusio: sovereignty score and 8 European alternatives

Fusio is an open-source API management platform and API gateway. It can expose existing SQL and NoSQL databases as REST APIs, route and secure traffic between microservices, and turn backend logic into tools for AI agents, including through native MCP support. Further features include a self-service developer portal with documentation, testing tools and keys, usage analytics and monitoring, SDK generation and API monetisation with plans and quotas. Fusio is written in PHP, works with MySQL, PostgreSQL and SQLite, and is self-hosted, for example with Docker or behind Nginx or Apache.

Fusio is developed in Germany by Christoph Kappestein under the name chrisk.app and is released under the Apache 2.0 licence. Because it is self-hosted, your organisation decides where the software and the data it exposes run; no vendor-operated service is involved unless you choose one. The source code is public on GitHub, so it can be inspected and maintained independently. For a European organisation this means an API layer under its own control, subject to the jurisdiction of whichever hosting provider it selects.

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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 2, 2026
Headquarters
DE (EU)Verified by hand
Sovereignty model
Open-source, distributedVerified by hand
Data hosting
EUVerified by hand
Open-source
YesVerified by hand
GDPR-compliant
YesVendor-stated
Hosting signal
IONOS-AS - IONOS SE, DE (DE)Technically measured
Category
API Management
Type
Product
Website
fusio-project.org ↗

The hosting signal shows the network that serves the vendor's website, often a CDN, and not necessarily where the service or your data is hosted. How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to Fusio

The European alternatives to Fusio 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

19 European API 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 Fusio

Fusio 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 Fusio scores best on data residency.

Fusio 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 Fusio 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 Fusio?

It depends on your use case. Strong EU alternatives to Fusio include Alumio, Apideck and Axway. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to Fusio?

Our list of EU alternatives to Fusio is mostly commercial options. Browse the category on the map for open-source choices.

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

Fusio is headquartered in DE (EU) and hosts data in EU. It is also open-source, so you can self-host it. That makes Fusio 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 2, 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 API Management

API Management: API gateways, API management, developer portals and API security. 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 Fusio — GDPR-compliant & EU-hosted · EU Sovereignty Score