Self-hosted / open sourcePlanning & EPMHeadquarters: US

Mondrian: sovereignty score and 8 European alternatives

Mondrian is an open-source OLAP server written in Java. It is a relational OLAP (ROLAP) engine: it reads data from relational databases through JDBC, keeps aggregated results in an in-memory cache and answers multidimensional queries written in MDX. It also supports the XML for Analysis and olap4j interfaces. The code repository contains the core Java library and a Workbench, a desktop tool for creating Mondrian schemas. Developers embed it in reporting and analysis applications. It is a software component that you run yourself, not a hosted service.

Mondrian is released under the Eclipse Public License. Pentaho acquired the project in 2005, and Hitachi acquired Pentaho in 2015. The source code is published in the Pentaho organisation on GitHub, so the corporate steward is a US-based company. Because you deploy the engine yourself, you decide where it runs and where the data stays, and it can operate entirely on European infrastructure without any vendor hosting. Before building on it, check the repository for recent releases and activity, since the latest stable release listed on Wikipedia dates from 2017.

See the 8 European alternatives ↓Assess your stack with Mondrian pre-selected

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Sovereignty score

71 / 1000 = high exposure
100 = sovereign

Jurisdiction SOV-210
Headquartered in the US: CLOUD Act and FISA 702
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-675
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 9, 2026

Headquarters	US (US)Verified by hand
Ultimate parent company	JPVerified by hand
EU adequacy decision	Only for companies individually certified under the EU-US Data Privacy FrameworkVerified by hand
Sovereignty model	Open-source, distributedVerified by hand
Data hosting	EUVerified by hand
Open-source	YesVerified by hand
GDPR-compliant	YesVendor-stated
Category	Planning & EPM
Type	Product
Website	github.com ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to Mondrian

The European alternatives to Mondrian 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

22 European Planning & EPM 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 Mondrian

Mondrian is headquartered in the United States. US vendors fall under the CLOUD Act and FISA 702: US authorities can compel access to data, even when that data sits in a European data centre. That is the core of the jurisdictional exposure in our model. The ultimate owner is based in JP. Foreign control undermines part of the certainty a European headquarters offers.

Data is hosted exclusively in the EU, so Mondrian scores best on data residency.

Mondrian 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 Mondrian 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 Mondrian?

It depends on your use case. Strong EU alternatives to Mondrian include Board International, CCH Tagetik and CoPlanner. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to Mondrian?

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

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

Mondrian is headquartered in US and hosts data in EU. The vendor states it is GDPR-compliant, but the data falls under non-EU jurisdiction. For full EU data residency the EU alternatives on this page usually offer more certainty.

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 9, 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 Planning & EPM

Planning & EPM: Budgeting, forecasting, scenario analysis, consolidation and enterprise performance management. 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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