Threema Work vs Slack
Looking for a European alternative to Slack? Here's how Threema Work compares, on EU hosting, GDPR and what it does.
Our pick for a European buyer: Threema Work. We weight data residency, GDPR and EU jurisdiction above everything else — that is the constraint this directory exists to solve.
What it is
Swiss end-to-end encrypted team messenger with on-premise option
not established
Headquarters
🇨🇭 CH
🇺🇸 US
EU data residency
Yes, for all customers
not established
DSGVO / GDPR
Yes
not established
Certifications
ISO 27001
not established
Price from
No
not established
Free plan
No
not established
Open Source
Yes
not established
Integrations
No
not established
We have not yet completed our own research on Slack; rows above show only what we can evidence. Check the vendor for specifics.
Data residency & compliance
Threema Work
Slack
EU data residency
Yes, for all customers
not established
Transfer mechanism
Not required — data stays in the EU
not established
Sub-processors
not established
not established
Certifications
ISO 27001
No