EU Sovereignty Score
Non-EU vendorForms & SurveysHeadquarters: US

Formstack: sovereignty score and 8 European alternatives

Formstack is a platform for online forms, document generation and electronic signatures, used to collect data and automate document-based workflows. It covers forms, documents, signing and Salesforce components and is delivered as a cloud service. The product is now presented as Formstack by Intellistack, and the operating company named on the vendor's pages is Intellistack, LLC.

The company is based in the United States. Press reports and a trademark register give different US locations, and investor PSG, a growth-equity firm, is named in press coverage; no majority owner was confirmed, so no foreign parent is identified. For a European organisation the key point is jurisdiction: as a US provider, Intellistack is subject to US law, including the CLOUD Act. The vendor pages reviewed do not state an EU hosting location or a GDPR data processing commitment, so organisations should check the contract and the vendor's trust centre before deciding.

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Sovereignty score
17 / 1000 = high exposure
100 = sovereign
  • Jurisdiction SOV-210
    Headquartered in the US: CLOUD Act and FISA 702
  • Data residency SOV-30
    No hosting in Europe (US)
  • Cryptographic key sovereignty SOV-320
    Key management with a non-European vendor
  • Freedom from lock-in SOV-640
    Closed source: switching requires data migration
  • Source & runtime sovereignty SOV-4 · SOV-615
    Closed source, runtime with the vendor

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
HeadquartersUS (US)Verified by hand
EU adequacy decisionOnly for companies individually certified under the EU-US Data Privacy FrameworkVerified by hand
Sovereignty modelVendor-hosted (non-EU)Verified by hand
Data hostingUSVerified by hand
Open-sourceNoVerified by hand
GDPR-compliantNoVendor-stated
CategoryForms & Surveys
TypeProduct
Websiteformstack.com ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to Formstack

The European alternatives to Formstack come from our knowledge base of over 6,200 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

41 European Forms & Surveys 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 Formstack

Formstack 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.

Formstack 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.

Formstack is closed source and hosted by the vendor. The encryption keys and the runtime sit with the vendor and switching requires data migration. Ask about bring-your-own-key, export options and open standards.

What this means for your organisation depends on your whole stack and context. The free assessment weighs Formstack 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 Formstack?

It depends on your use case. Strong EU alternatives to Formstack include 123FormBuilder, AidaForm and Askia. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to Formstack?

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

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

Formstack 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 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 Forms & Surveys

Forms & Surveys: Online forms, surveys and feedback tools. 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 Formstack — GDPR-compliant & EU-hosted · EU Sovereignty Score