tech from europe
vsMicrosoft Teams

OpenTalk vs Microsoft Teams

Last updated June 2026

Looking for a European alternative to Microsoft Teams? Here's how OpenTalk compares, on EU hosting, GDPR and what it does.

Our pick for a European buyer: OpenTalk. We weight data residency, GDPR and EU jurisdiction above everything else — that is the constraint this directory exists to solve.

OpenTalk
Microsoft Teams
What it is
Open-source video conferencing from Germany, built for public authorities and regulated sectors
not established
Headquarters
🇩🇪 DE
🇺🇸 US
EU data residency
Yes, for all customers
not established
DSGVO / GDPR
Yes
not established
Certifications
No
not established
Price from
€7.50/user/mo
not established
Free plan
Yes
not established
Open Source
Yes
not established
Ratings
No
No
Integrations
innovaphone App Store, Outlook (Premium plan plug-in), ownCloud, Manufacturing software systems (MRP, MES, ERP)
not established

We have not yet completed our own research on Microsoft Teams; rows above show only what we can evidence. Check the vendor for specifics.

Where each one wins

OpenTalk

Strengths

  • +Strong GDPR compliance and strict data protection with servers located in Germany
  • +Comprehensive core feature set including chat, direct messaging, surveys, voting, and virtual workshops
  • +Supports diverse communication needs for businesses, educational institutions, and public sector organizations
  • +High trust among users due to transparent data handling and EU-based hosting
  • +Reliable for standard video conferencing and team collaboration scenarios

Limitations

  • −User interface perceived as less polished and intuitive compared to major competitors
  • −Onboarding and initial setup may require more effort or clearer guidance
  • −Occasional performance issues or system responsiveness reported

Microsoft Teams

Review sentiment not yet compiled.

Data residency & compliance

OpenTalk
Microsoft Teams
EU data residency
Yes, for all customers
not established
Transfer mechanism
Not required — data stays in the EU
not established
DPA
Published →
not established
Sub-processors
not established
not established
Certifications
No
No

Pricing

OpenTalk

  • Starter Free per user / month10 conference rooms · Up to 5 participants · 30-minute max call length
  • Standard €7.50 per user / monthUnlimited conference rooms · Up to 50 participants · 240-minute max call length
  • Premium €12.50 per user / monthUnlimited conference rooms · Up to 200 participants · Unlimited call length
  • Custom On request Custom features · On-premises hosting option

All prices exclude VAT. Annual billing available at a lower rate.

Microsoft Teams

No published pricing we could verify.

Features

OpenTalk

Conference Management
Scheduling conferences via dashboard, Invitation function with integrated address book, Access restrictions for participants, Multi-person moderation
Communication & Interaction
Video and audio conferencing, Chat and direct messaging, Breakout rooms for group discussions, Interactive whiteboard
Recording & Streaming
GDPR-compliant conference recording, Streaming (Premium plan)
Accessibility & Connectivity
Telephone dial-in for participants with poor internet connection
Data Protection & Compliance
GDPR-compliant operation in German data centers, Data processing agreement included

Microsoft Teams

Feature breakdown not yet compiled.

See OpenTalk →More Microsoft Teams alternatives