EU Sovereignty Score
Non-EU vendorCollaborationHeadquarters: US

Pumble: sovereignty score and 8 European alternatives

Pumble is a team communication app for businesses. It offers one-to-one and group messages, channels and threads, file sharing, voice and video messages, calls with screen sharing and recordings, searchable message history, guest access and an analytics dashboard. Integrations include Clockify, Plaky and Google Drive, and an MCP server lets AI agents connect. Pumble runs as a web app and as apps for iOS, Android, Mac, Windows and Linux. It is delivered as SaaS and is not open source.

Pumble is made by CAKE.com Inc., based in Palo Alto, California, which also makes Clockify and Plaky. CAKE.com's privacy policy states that most of its operations are conducted in the United States, and it relies on Standard Contractual Clauses for transfers from the EEA. It lists Hetzner (Germany), Amazon Web Services and Microsoft (both USA) as cloud infrastructure providers, and says some users may be able to choose their data location, including EEA locations. A European organisation should confirm which location applies to its workspace.

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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 (EU, 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 9, 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 hostingEU, USVerified by hand
Open-sourceNoVerified by hand
GDPR-compliantYesVendor-stated
Hosting signalAMAZON-02 - Amazon.com, Inc., US (US)Technically measured
CategoryCollaboration
TypeProduct
Websitepumble.com ↗

The hosting signal shows the network that serves the vendor's website, often a CDN, and not necessarily where the service or your data is hosted. How we verify · Something wrong? Suggest a correction

Top EU-based & GDPR-compliant alternatives to Pumble

The European alternatives to Pumble 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

37 European Collaboration 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 Pumble

Pumble 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.

Pumble hosts data in EU, US. 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.

Pumble 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 Pumble 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 Pumble?

It depends on your use case. Strong EU alternatives to Pumble include BigBlueButton (self-host), CryptPad and FluffyChat. On this page you can compare 8 EU alternatives by jurisdiction, data residency and open-source status.

Are there open-source alternatives to Pumble?

Yes. Open-source EU alternatives to Pumble include BigBlueButton (self-host), CryptPad, FluffyChat, HedgeDoc, Huly, HumHub and Nextcloud. These keep your data fully under your own control and let you self-host if you want to.

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

Pumble is headquartered in US and hosts data in EU, US. 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 Collaboration

Collaboration: Team communication, file sharing, video conferencing, document editing. 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 Pumble — GDPR-compliant & EU-hosted · EU Sovereignty Score