Wire vs Slack
Last updated October 2026
Looking for a European alternative to Slack? Here's how Wire compares, on EU hosting, GDPR and what it does.
Our pick for a European buyer: Wire. We weight data residency, GDPR and EU jurisdiction above everything else — that is the constraint this directory exists to solve.
What it is
Secure team collaboration with end-to-end encryption and EU hosting
Team communication and collaboration platform with channels, messaging, and integrations.
Headquarters
🇨🇭 CH
🇺🇸 US · 2013
EU data residency
Yes, for all customers
Available on some plansEU data residency is available only on the most expensive plans.
DSGVO / GDPR
Yes
Yes
Certifications
ISO 27001, ISO 27701
ISO 27001, ISO 27017, ISO 27018, SOC 2 Type II
Price from
No
$7.25/user/mo
Free plan
No
Yes
Open Source
Yes
No
Integrations
No
Google Drive, Zoom, Microsoft Teams, Trello, Asana +5
Where each one wins
Wire
Review sentiment not yet compiled.
Slack
Strengths
- +Highly customizable with extensive app integrations
- +Intuitive interface for team collaboration
- +Strong search functionality for past messages
- +Reliable uptime and performance
Limitations
- −Can become expensive for large teams
- −Steep learning curve for advanced features
- −Notifications can be overwhelming
- −Limited message history in free tier
Data residency & compliance
Wire
Slack
EU data residency
Yes, for all customers
Available on some plansEU data residency is available only on the most expensive plans.
Transfer mechanism
Not required — data stays in the EU
Standard Contractual Clauses
Certifications
ISO 27001, ISO 27701
ISO 27001, ISO 27017, ISO 27018, SOC 2 Type II
Pricing
Wire
No published pricing we could verify.
Slack
- Free Free ForeverUp to 10,000 searchable messages · 10 app integrations · 1:1 voice and video calls
- Pro $7.25 per active user/month (billed annually)Unlimited message history · Unlimited app integrations · Group video calls up to 50 participants
- Business+ $12.50 per active user/month (billed annually)Advanced security features · Compliance exports · 99.99% guaranteed uptime
- Enterprise Grid On request CustomUnlimited workspaces · Enterprise-grade security and compliance · Data residency options
EU data residency is only available on Enterprise Grid. Pricing for this plan is custom and requires contacting sales.
Features
Wire
Feature breakdown not yet compiled.
Slack
- Messaging & Collaboration
- Real-time messaging in channels and direct messages, Threaded conversations for organized discussions, File sharing and collaboration, Searchable message history
- Integrations & Workflow
- Connects with 2,400+ third-party apps, Customizable workflows with Slack Workflow Builder, Automated reminders and notifications, API access for custom integrations
- Security & Compliance
- Enterprise Key Management (EKM) for message encryption, Data loss prevention (DLP) integrations, Compliance with GDPR, HIPAA, and FINRA, Two-factor authentication (2FA) enforcement