Comparison

ONLYOFFICE - Secure Online Office vs microsoft.com

ONLYOFFICE - Secure Online Office and microsoft.com both land on Depends.

ONLYOFFICE - Secure Online Office

Depends

Confidence: Medium

Buy it if you want a free, self-hosted, MS Office-compatible suite or editors embedded in your own platform.

Depends

Confidence: Low

Buy only if you run an enterprise security operation on a Microsoft 365 estate with dedicated staff to manage it.

ONLYOFFICE - Secure Online Office versus microsoft.com
Compare	ONLYOFFICE - Secure Online Office	microsoft.com
Verdict	Depends	Depends
Best for	Self-hosters	Enterprise SOC teams
Who it's not for	Anyone wanting Google Docs zero-setup simplicity	Small teams needing basic antivirus
Privacy	Three public CVEs found (2021-2023), one critical; fixed in newer releases . patch promptly.^⁷	No known public vulnerabilities found in the sources reviewed.¹¹
Support quality	No support evidence in sources	Q&A thread shows deleted answers, blocked access.
Public sentiment	Self-hosters and Linux users call it a practical, MS-compatible office editor that is good but not perfect.^³	Public user feedback is nearly absent; the only thread found is a blocked-page complaint, not product reviews.¹⁰
Biggest gotcha	Self-hosted means you own patching; older versions carry known XSS and critical CVEs^⁸	Guess: deep Entra/Intune integration means painful migration if you ever leave Microsoft.¹¹