Collabora Online vs Microsoft 365
Last updated August 2026
Looking for a European alternative to Microsoft 365? Here's how Collabora Online compares, on EU hosting, GDPR and what it does.
Our pick for a European buyer: Collabora Online. We weight data residency, GDPR and EU jurisdiction above everything else — that is the constraint this directory exists to solve.
What it is
Open-source, browser-based office suite with EU hosting and Nextcloud integration
not established
Headquarters
🇬🇧 GB
No
EU data residency
Yes, for all customers
not established
DSGVO / GDPR
Yes
not established
Certifications
ISO 27001, ISO 9001
not established
Price from
€3/user/mo
not established
Free plan
Yes
not established
Open Source
Yes
not established
Integrations
Nextcloud, ownCloud, Moodle, Drupal, WordPress +7
not established
We have not yet completed our own research on Microsoft 365; rows above show only what we can evidence. Check the vendor for specifics.
Where each one wins
Collabora Online
Microsoft 365
Review sentiment not yet compiled.
Data residency & compliance
Collabora Online
Microsoft 365
EU data residency
Yes, for all customers
not established
Transfer mechanism
Not required — data stays in the EU
not established
DPA
not established
not established
Sub-processors
not established
not established
Certifications
ISO 27001, ISO 9001
No
Pricing
Collabora Online
- Development Edition Free per user / monthFor home use, testing and startups · On-premise deployment · Rolling updates (no long-term support)
- Business Plan €3 per user / month (up to 99 users)Long-term support with signed security updates · Service level agreement (SLA) · Lifetime maintenance
- Enterprise Plan On request per user / month (100+ users)All Business features included · Roadmap input and integration support · Customization options
Prices vary by region (€3, £2.60, or $3.40 per user/month for the Business plan). Volume discounts available for Enterprise plans.
Microsoft 365
No published pricing we could verify.
Features
Collabora Online
- Document Editing
- Writer for text documents, Calc for spreadsheets, Impress for presentations, Draw for vector graphics and diagrams
- Collaboration & Deployment
- On-premise deployment, Real-time collaborative editing, Accessibility certification (WCAG, ATAG), Long-term support with signed security updates
- Enterprise Features
- Roadmap input for customers, Integration support and consultancy, Customization options, Desktop version included
Microsoft 365
Feature breakdown not yet compiled.