Self-hosted / open sourceData Platform & WarehouseHeadquarters: DE

Stackable Data Platform: sovereignty score and 8 European alternatives

Stackable provides an open-source data platform that runs on Kubernetes and bundles data applications such as Trino, Apache Spark, Apache Kafka, Apache Airflow and OpenSearch. The website describes it as a modular platform that can run on-premises, in any cloud or in hybrid setups. Organisations run the software themselves, and the company sells subscriptions, expert support and a managed data lakehouse on top of it.

Stackable GmbH is a German company with an address in Wedel. The website says the platform is developed and supported under European law and refers to support for NIS2 and DORA. The source code is published under non-restrictive open-source licences, so a European organisation can run the platform on its own infrastructure and decide where its data resides. The website does not state where the managed lakehouse hosts customer data, so this should be confirmed in writing before a cloud-hosted service is used. Data residency therefore depends on the deployment chosen.

See the 8 European alternatives ↓Assess your stack with Stackable Data Platform pre-selected

Mastodon LinkedIn Bluesky X Email

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 10, 2026

Headquarters	DE (EU)Verified by hand
Data hosting	Self-hosted, e.g. in EU (your choice)Verified by hand
Open-source	YesVerified by hand
GDPR-compliant	NoVendor-stated
Category	Data Platform & Warehouse
Type	Product
Website	stackable.tech ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to Stackable Data Platform

The European alternatives to Stackable Data Platform 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

12 European Data Platform & Warehouse vendors are in the catalogue. View the whole category · Submit an alternative · View category on the map

Is Stackable Data Platform one of many dependencies?

Score your whole stack in about three minutes. Free, no account needed.

Assess your stack →View a sample report (opens in a new tab)

Why digital sovereignty matters with Stackable Data Platform

Stackable Data Platform 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 Stackable Data Platform scores best on data residency.

Stackable Data Platform 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 Stackable Data Platform 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 Stackable Data Platform?

It depends on your use case. Strong EU alternatives to Stackable Data Platform include DuckDB, Exasol and Falkor. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to Stackable Data Platform?

Yes. Open-source EU alternatives to Stackable Data Platform include DuckDB, Garage and MonetDB. These keep your data fully under your own control and let you self-host if you want to.

Is Stackable Data Platform GDPR-compliant and where is the data hosted?

Stackable Data Platform is headquartered in DE (EU) and hosts data in EU. It is also open-source, so you can self-host it. That makes Stackable Data Platform 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 10, 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 Data Platform & Warehouse

Data Platform & Warehouse: Lakehouses, cloud data warehouses, data-lake storage and analytical databases for enterprise-wide analysis. 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.

Also in this category

See all →

Open in the alternatives dashboard Missing a vendor? Submit it Are you this vendor? You can also become a sponsor on the Data Platform & Warehouse page — with no effect on your score