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Microsoft 365 vs FreeOffice: catalog facts
Microsoft 365	FreeOffice
Freemium Free web versions are available. Desktop apps require a paid subscription.	Free Free for personal and business use.
Windows, macOS, Android, iOS, Web	Windows, macOS, Linux
The reference implementation of the formats everyone else has to match Desktop, web and mobile apps with real-time co-authoring	Free for personal and business use Compatible with Word, Excel and PowerPoint files
Subscription pricing, with the desktop apps behind it Closed source, and heavily tied to a Microsoft account	Closed source Mobile apps are part of the paid SoftMaker Office
Downloadable app, Hosted service	Downloadable app
Closed source	Closed source
License not stated	License: Proprietary
Account needed	Not stated if an account is needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked September 22, 2026	Official website Full listing and sources Checked September 23, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.