EU Sovereignty Score
Self-hosted / open sourceCAD & EngineeringHeadquarters: CH

RELUX: sovereignty score and 8 European alternatives

RELUX Informatik AG, based in Münchenstein near Basel in Switzerland, develops software for planning artificial and daylight. Its central tool is the ReluxDesktop application, which simulates lighting in line with standards. The company also offers ReluxCAD plug-ins for Revit, AutoCAD and TinLine Plan, modules for energy and tunnel lighting, and operates the relux.com platform alongside its software applications.

RELUX describes itself as an independent family company since 2010. Switzerland is not an EU member state, so for a European organisation RELUX is a supplier based outside the EU. ReluxDesktop runs as a desktop application on the user's own computer. The company's public material does not state where the relux.com services are hosted, so organisations that use the online services should ask the vendor in writing for the hosting location and the data protection terms.

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Sovereignty score
80 / 1000 = high exposure
100 = sovereign
  • Jurisdiction SOV-2100
    Headquartered in Switzerland: Swiss law, recognised by the EU as adequate
  • Data residency SOV-3100
    Hosting in Switzerland only (recognised by the EU as adequate)
  • 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 12, 2026
Headquarters
CH (EU)Verified by hand
Data hosting
Self-hosted, e.g. in CH (your choice)Verified by hand
Open-source
NoVerified by hand
GDPR-compliant
NoVendor-stated
Category
CAD & Engineering
Type
Product
Website
relux.com ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to RELUX

The European alternatives to RELUX come from our knowledge base of over 7,800 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

88 European CAD & Engineering 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 RELUX

RELUX is headquartered in Switzerland and falls under Swiss law, including the revised Swiss data protection act. Switzerland is not an EU member, but the European Commission recognises its level of data protection as adequate. Its Swiss headquarters does not by itself bring it under US legislation such as the CLOUD Act.

RELUX 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.

RELUX 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 RELUX 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 RELUX?

It depends on your use case. Strong EU alternatives to RELUX include ACCA software, ALLPLAN and AUCOTEC Engineering Base. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to RELUX?

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

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

RELUX is headquartered in CH (EFTA) and hosts data in CH. That makes RELUX 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 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 CAD & Engineering

CAD & Engineering: Computer-aided design, 3D modelling and engineering simulation software. 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 RELUX — GDPR-compliant & EU-hosted · EU Sovereignty Score