What is the best European alternative to Slack?

EuroShift lists 7 GDPR-compliant European alternatives to Slack. The top picks are highlighted with a badge and are EU-hosted, GDPR-compliant and free from US Cloud Act exposure.

Why switch from Slack to a European tool?

Slack is operated by Salesforce, a US company. Data is processed under US jurisdiction (Cloud Act, FISA 702), which conflicts with GDPR for many EU use cases. EU alternatives keep data within European jurisdiction.

Are European alternatives to Slack GDPR-compliant?

Yes. Every provider listed here is hosted in the EU or Switzerland, operates under GDPR and is independent of the US Cloud Act.

🇺🇸SalesforceTeam Communication

European alternatives to Slack

Slack is the dominant team-messaging platform, owned by Salesforce since 2020 and hosted on AWS in the United States. Every message, file and integration sits under US jurisdiction. The European alternatives — Element (Matrix), Mattermost, Rocket.Chat and Wire — are open-source, self-hostable or EU-hosted, and let you keep team conversations inside the EU under GDPR.

7 GDPR-compliant alternatives to Slack

View full Team Communication directory

Product	Country	Price	Rating	GDPR	Link
Zulip⭐ Top Pick Open-source team chat organized by topics, with EU hosting options.	🇪🇺International / EU	Free (self-hosted)	4.6(11)via Trustpilot	✓ GDPR	Visit
Mattermost Open-source Slack alternative with self-hosting for data control.	🇪🇺International / EU	Free (self-hosted)	3.4(9)via Trustpilot	✓ GDPR	Visit
Wire Swiss end-to-end encrypted messaging for teams and individuals.	🇨🇭Switzerland	Free / €4/user/mo	2.2(32)via Trustpilot	✓ GDPR	Visit
CryptPad French end-to-end encrypted collaboration and office suite.	🇫🇷France	Free / €5/mo	4.1(6)via Trustpilot	✓ GDPR	Visit
Rocket.Chat Brazilian-European open-source team messaging, self-hostable.	🇪🇺Brazil / EU	Free (self-hosted)	4.1(110)via Trustpilot	✓ GDPR	Visit
Element Decentralized messaging built on the Matrix protocol.	🇬🇧United Kingdom	Free / €5/user/mo	2.2(65)via Trustpilot	✓ GDPR	Visit
Twake French open-source team collaboration and project management platform.	🇫🇷France	Free / custom	--	✓ GDPR	Visit

Zulip⭐ Top Pick

4.6

Open-source team chat organized by topics, with EU hosting options.

🇪🇺 International / EUFree (self-hosted)

Visit

Mattermost

3.4

Open-source Slack alternative with self-hosting for data control.

🇪🇺 International / EUFree (self-hosted)

Visit

Wire

2.2

Swiss end-to-end encrypted messaging for teams and individuals.

🇨🇭 SwitzerlandFree / €4/user/mo

Visit

CryptPad

4.1

French end-to-end encrypted collaboration and office suite.

🇫🇷 FranceFree / €5/mo

Visit

Rocket.Chat

4.1

Brazilian-European open-source team messaging, self-hostable.

🇪🇺 Brazil / EUFree (self-hosted)

Visit

Element

2.2

Decentralized messaging built on the Matrix protocol.

🇬🇧 United KingdomFree / €5/user/mo

Visit

Twake

French open-source team collaboration and project management platform.

🇫🇷 FranceFree / custom

Visit

Why migrate away from Slack?

Slack is operated by Salesforce, a US-controlled provider subject to the US Cloud Act and FISA Section 702. For European organisations handling personal, commercial or public-sector data, that creates an ongoing GDPR transfer risk. The alternatives above are headquartered in the EU or Switzerland, store data within European jurisdiction and remove that exposure.

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