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Slack
By Slack Technologies (Salesforce) · slack.com
3,3 Good
Market-leading channel-based team chat with a huge app ecosystem and AI features. Owned by American Salesforce and EU data storage requires the Business+ plan. As an American company, Slack is covered by the Cloud Act regardless of where data is stored.
Best for: Teams that want smooth channel-based chat with the market’s largest integration offering
Pros
- Very polished interface and strong search
- Over 2,600 app integrations plus huddles, canvas and workflows
- EU data storage (including Frankfurt) possible for data at rest
- Solid certification portfolio (ISO 27001/27017/27018, SOC 2)
Cons
- American company covered by FISA 702 and the Cloud Act even with EU storage
- EU data storage requires Business+ or Enterprise Grid, not the Pro plan
- No Swedish-language version of the interface
- Free version deletes message history after 90 days
Quick facts
| Price | Freemium |
|---|---|
| Origin | Outside EU (Slack Technologies (Salesforce)) |
| Categories | Collaboration |
| EU data storage | Enterprise/Business plan only |
| GDPR terms (DPA) | Yes |
Certifications
ISO 27001ISO 27017ISO 27018SOC 2
Sources & evidence
Claims about data storage, jurisdiction and compliance should be verifiable. Here is the evidence behind the statements above:
- Slack – Compliance (ISO 27001, ISO 27017, ISO 27018, SOC 2 Type II as well as GDPR and data processing agreement) →
- Slack – Data residency for Slack (EU data storage, including Frankfurt and Stockholm, requires Business+ or Enterprise) →
- Slack – Pricing (free plan with 90-day message history, Pro, Business+ and Enterprise+ plans) →