Head-to-head · Collaboration
Slack vs eGroupware
Which one to pick in 2026 — comparing 🇺🇸 Slack with the European alternative 🇪🇺 eGroupware on the things that actually decide who can read your data.
🇺🇸 Slackvs🇪🇺 eGroupware
Verdict
Who has stronger privacy guarantees by law?
eGroupware — GDPR-native and outside the US CLOUD Act / FISA 702 reach.
Which one encrypts your data end-to-end by default?
Neither ships full E2E by default — check the table for nuance.
Which one tracks you for ads?
Neither monetises through ad tracking.
Which one is open source?
eGroupware is open source. Slack is proprietary.
Side-by-side
Slack vs eGroupware — full comparison
Criteria
🇪🇺 eGroupware
🇺🇸 Slack
Headquarters
Germany
San Francisco, USA
Jurisdiction
Germany
USA
Data location
Germany (if self-hosted) / EU (if cloud)
US (EU residency paid tier)
GDPR-native
Yes
No
CLOUD Act / FISA exposed
No
Yes
Ad tracking
No
No
End-to-end encryption
No
No
Open source
Yes
No
Ownership
Private (Stylite AG)
Salesforce
Founded
2000
2013
Make the switch
Try eGroupware instead of Slack
Open source groupware for businesses and teams.
Other European alternatives to Slack