EU Sovereignty Score
Self-hosted / open sourceBPM & WorkflowHeadquarters: US

StackStorm: sovereignty score and 8 European alternatives

StackStorm is an event-driven automation platform that connects applications, services and workflows. Its rules can react to events from other systems and run actions or multi-step workflows, from simple if-then rules to more complicated flows. The project is open-source software under the Apache 2.0 licence, and its code and documentation are published on GitHub. The project has no vendor-operated cloud service, so organisations deploy the software on infrastructure of their own.

StackStorm is maintained by a community under the StackStorm organisation on GitHub. The website states that it is a series of LF Projects, LLC, the project vehicle of the Linux Foundation, a non-profit organisation under US tax law, so the project's governance falls under US law. Because no vendor-hosted service is involved, customer data stays on infrastructure the organisation chooses. Before adopting it, check the current maintenance status and release history on GitHub, since this is a community project.

See the 8 European alternatives ↓Assess your stack with StackStorm pre-selected
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Sovereignty score
69 / 1000 = high exposure
100 = sovereign
  • Jurisdiction SOV-210
    Headquartered in the US: CLOUD Act and FISA 702
  • Data residency SOV-3100
    No hosting in Europe (US)
  • 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-665
    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 11, 2026
Headquarters
US (US)Verified by hand
EU adequacy decision
Only for companies individually certified under the EU-US Data Privacy FrameworkVerified by hand
Data hosting
Self-hosted, e.g. in US (your choice)Verified by hand
Open-source
YesVerified by hand
GDPR-compliant
NoVendor-stated
Category
BPM & Workflow
Type
Product
Website
stackstorm.com ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to StackStorm

The European alternatives to StackStorm 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 BPM & Workflow 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 StackStorm

StackStorm 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.

StackStorm hosts data outside the EU (US). Personal data therefore leaves the EU, which requires a transfer mechanism under the GDPR and pulls the data residency score down.

StackStorm 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 StackStorm 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 StackStorm?

It depends on your use case. Strong EU alternatives to StackStorm include Albato, ARIS and Automatisch. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to StackStorm?

Yes. Open-source EU alternatives to StackStorm include Automatisch, Ofelia (Bonita) and Flowable. These keep your data fully under your own control and let you self-host if you want to.

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

StackStorm is headquartered in US and hosts data in US. Its GDPR compliance is limited or unclear. 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 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 BPM & Workflow

BPM & Workflow: Business process management, workflow automation and process modelling. 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

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8 European alternatives to StackStorm — GDPR-compliant & EU-hosted · EU Sovereignty Score