Slack

Easy chat with serious lock-in and US cloud processing.

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Proprietary · https://slack.com

Chat

Slack cloud

Hosting: Global SaaS

Export is possible on paid plans; culture still sticks to Slack.

Fair 1.3 Easy 4.7 Secure 3.0

Pillar	Criterion	Score	Evidence
Easy	Day-one UX Can non-technical staff use it without a project?	5	Almost no training needed. Source
Easy	Operate Admin burden, updates, backups and language coverage.	5	Salesforce operates it. Source
Easy	Integrate SSO, mail/CalDAV, APIs and common NGO connectors.	4	Many integrations; SSO on paid tiers. Source
Fair	Lock-in / exit Can you leave with your data in open formats, at known cost?	2	Paid export exists; history and apps do not move cleanly. Source
Fair	Sovereignty EU legal entity, EU hosting, and exposure to extra-EU lawful access?	1	US vendor (Salesforce); EU residency is limited. Source
Fair	Openness Open source or open standards? Are independent implementations possible?	1	Closed source; proprietary clients and APIs. Source
Secure	IT security Authentication, encryption, patch cadence and independent audit.	4	Enterprise security features on higher plans. Source
Secure	User security 2FA, roles, phishing resistance and safe defaults.	3	2FA exists; workspace spam and phishing links are common. Source
Secure	Personal data GDPR fit: DPA, residency, sub-processors and Schrems II posture.	2	US processor; DPA does not remove CLOUD Act risk. Source