EU Sovereignty Score
Self-hosted / open sourceTesting & QAHeadquarters: DE

TESSY: sovereignty score and 8 European alternatives

TESSY is a test system from Razorcat for unit and integration testing of embedded software, aimed at developers and testers of that software. It is delivered as installed software, with licences that can be shared through a Floating License Server. Razorcat also offers testing services and seminars.

Razorcat Development GmbH is based in Berlin, according to its imprint, and no foreign owner is named. Because TESSY is installed on the customer's own systems, test data and source code in principle remain within the organisation's own infrastructure, and no vendor-hosted service is described. The product is commercial software and is not open source. For a European organisation, the key points are control over the installation and the licence and maintenance contract with a German supplier.

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Sovereignty score
80 / 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-380
    Closed source, but self-hostable: encryption keys and runtime under your own control
  • Freedom from lock-in SOV-640
    Closed source: switching requires data migration
  • Source & runtime sovereignty SOV-4 · SOV-680
    Closed source, but self-hostable on your own infrastructure

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
DE (EU)Verified by hand
Data hosting
Self-hosted, e.g. in EU (your choice)Verified by hand
Open-source
NoVerified by hand
GDPR-compliant
NoVendor-stated
Category
Testing & QA
Type
Product
Website
razorcat.com ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to TESSY

The European alternatives to TESSY 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

29 European Testing & QA 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 TESSY

TESSY 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.

TESSY runs on infrastructure you choose and control yourself. You decide where the data lives, including fully within the EU if you want — this is not a fixed hosting choice made by the vendor.

TESSY is closed source, but you run the software yourself on your own infrastructure. The encryption keys and the runtime therefore stay under your own control, though you cannot audit or modify the source code. Ask about export options and open standards to limit software-level lock-in.

What this means for your organisation depends on your whole stack and context. The free assessment weighs TESSY 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 TESSY?

It depends on your use case. Strong EU alternatives to TESSY include aqua cloud, BTC Embedded Systems and Cantata. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to TESSY?

Yes. Open-source EU alternatives to TESSY include Cerberus Testing and Gatling. These keep your data fully under your own control and let you self-host if you want to.

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

TESSY is headquartered in DE (EU) and hosts data in EU. That makes TESSY 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 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 Testing & QA

Testing & QA: Software testing, test automation, browser testing and quality assurance. 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 TESSY — GDPR-compliant & EU-hosted · EU Sovereignty Score