Head-to-head · Productivity
Microsoft Office vs ONLYOFFICE
Which one to pick in 2026 — comparing 🇺🇸 Microsoft Office with the European alternative 🇪🇺 ONLYOFFICE on the things that actually decide who can read your data.
🇺🇸 Microsoft Officevs🇪🇺 ONLYOFFICE
Verdict
Who has stronger privacy guarantees by law?
ONLYOFFICE — GDPR-native and outside the US CLOUD Act / FISA 702 reach.
Which one encrypts your data end-to-end by default?
ONLYOFFICE ships E2E encryption by default. Microsoft Office does not.
Which one tracks you for ads?
Neither monetises through ad tracking.
Which one is open source?
ONLYOFFICE is open source. Microsoft Office is proprietary.
Side-by-side
Microsoft Office vs ONLYOFFICE — full comparison
Criteria
🇪🇺 ONLYOFFICE
🇺🇸 Microsoft Office
Headquarters
Riga, Latvia
Redmond, USA
Jurisdiction
Latvia (GDPR)
USA
Data location
EU or self-hosted
Global
GDPR-native
Yes
No
CLOUD Act / FISA exposed
No
Yes
Ad tracking
No
No
End-to-end encryption
Yes
No
Open source
Yes
No
Ownership
Ascensio System SIA
Microsoft Corp.
Founded
2009
1990
Make the switch
Try ONLYOFFICE instead of Microsoft Office
Office suite, fully MS-compatible.