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LibreOffice vs unoserver: catalog facts
LibreOffice	unoserver
Free Free software under the Mozilla Public License v2.0, funded by donations and by companies…	Free Free and open source under the MIT license.
Windows, macOS, Linux	Linux, Self-hosted, Command line
One suite with six tools: Writer, Calc, Impress, Draw, Base and Math Opens and saves Microsoft Office formats as well as OpenDocument	Keeps LibreOffice loaded between conversion requests Includes conversion, comparison, and server-check commands
Complex Word and Excel documents can shift layout, particularly with heavy formatting or macros The interface looks dated next to Microsoft 365 unless you switch to a tabbed layout	Requires LibreOffice and the same Python installation that LibreOffice uses. Windows and macOS support are untested.
Downloadable app	Downloadable app, Self-hosted
Open source	Open source
License: MPL-2.0	License: MIT
No account needed	Not stated if an account is needed
Works offline	Not stated if it works offline
Official website Full listing and sources Checked September 20, 2026	Official website Full listing and sources Checked October 8, 2026

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