Self-hosted / open sourceSupply Chain & Asset ManagementHeadquarters: DE

calServer: sovereignty score and 8 European alternatives

calServer is calibration management software for accredited calibration laboratories, calibration service providers and quality assurance in manufacturing. It manages test equipment with due dates and loan items, guides each calibration through to a released certificate, and keeps traceability to reference standards, measurement uncertainty and conformity decisions with guard bands on the record. Certificates are released under a four-eyes principle and issued as sealed PDFs, and digital calibration certificates (DCC 3.3.0) can be generated and imported. An audit trail, customer and order handling, a document system and a Fluke MET/CAL integration complete the product, which has been in production since 2008.

calServer is developed by calHelp, a sole proprietorship in Teltow, Germany. According to the vendor, it can be run as a cloud service hosted in Germany at Hetzner, or self-hosted with Docker Compose, Kubernetes or OpenShift on MySQL, PostgreSQL or Microsoft SQL Server. Self-hosting lets you decide where data lives, including in closed networks. The website does not name any parent company.

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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 14, 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	YesVendor-stated
Category	Supply Chain & Asset Management
Type	Product
Website	calserver.com ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to calServer

The European alternatives to calServer come from our knowledge base of over 9,200 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

132 European Supply Chain & Asset 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 calServer

calServer 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.

calServer 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.

calServer 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 calServer 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 calServer?

It depends on your use case. Strong EU alternatives to calServer include 247Uptime, ACS fit MES and ADASMA. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to calServer?

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

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

calServer is headquartered in DE (EU) and hosts data in EU. That makes calServer 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 14, 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

In the changelog

Earlier changes to this page, as listed in the public changelog.

594 Swiss and German software makers (October 14, 2026)

Digital sovereignty in Supply Chain & Asset Management

Supply Chain & Asset Management: Demand forecasting, inventory and production planning, warehouse management and enterprise asset management (EAM). 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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