EU Sovereignty Score
Non-EU vendorMessagingHeadquarters: US

Stream Chat: sovereignty score and 8 European alternatives

Stream Chat is a real-time chat API and set of software development kits from Stream.io, Inc. Developers use it to add chat and messaging features to their own applications. It is delivered as a cloud service with SDKs for web and mobile applications. According to the company's footer, the product is designed and built in Boulder, Colorado, and Amsterdam, with a global remote team.

A 2020 press release states that Stream moved its headquarters to Boulder, Colorado, and the company also maintains an office in Amsterdam. As a US company, Stream is subject to US law, which is the main sovereignty consideration for a European customer. Its privacy notice refers to a data processing addendum and EU standard contractual clauses for transfers. The sub-processor list names providers in the US, EMEA and APAC and some located in the EU, but a customer-selectable EU data region is not documented.

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Sovereignty score
27 / 1000 = high exposure
100 = sovereign
  • Jurisdiction SOV-210
    Headquartered in the US: CLOUD Act and FISA 702
  • Data residency SOV-350
    Hosting inside and outside Europe (US, EU)
  • 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 11, 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 hostingUS, EUVerified by hand
Open-sourceNoVerified by hand
GDPR-compliantYesVendor-stated
CategoryMessaging
TypeProduct
Websitegetstream.io ↗

How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to Stream Chat

The European alternatives to Stream Chat 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

21 European Messaging 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 Stream Chat

Stream Chat 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.

Stream Chat hosts data in US, EU. Exactly what stays within the EU — and what does not — is defined by the vendor's data processing agreement and sub-processor list, not by a setting you control yourself; check those documents for the precise scope, including backups, logs and support access.

Stream Chat 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 Stream Chat 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 Stream Chat?

It depends on your use case. Strong EU alternatives to Stream Chat include Balsio, Berty and Conversations (XMPP). On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to Stream Chat?

Yes. Open-source EU alternatives to Stream Chat include Berty, Conversations (XMPP), Delta Chat, Dino and Gajim. These keep your data fully under your own control and let you self-host if you want to.

Is Stream Chat GDPR-compliant and where is the data hosted?

Stream Chat is headquartered in US and hosts data in US, 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 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 Messaging

Messaging: Personal messaging — chat, group conversations, media sharing. 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 Stream Chat — GDPR-compliant & EU-hosted · EU Sovereignty Score