ONLYOFFICE Desktop Editors

ONLYOFFICE’s whole design goal is Microsoft compatibility: OOXML is its native format, so documents round-trip with Word and Excel users far more faithfully than LibreOffice manages, and the ribbon-style tabbed interface means near-zero relearning. It covers documents, spreadsheets, presentations, and PDF forms, and can pair with a self-hosted server for real-time collaboration.

Depth is where LibreOffice wins: Calc beats ONLYOFFICE’s spreadsheet on advanced functions and huge files, macro support (JavaScript-based) doesn’t run VBA, and offline feature breadth is thinner overall. It’s also an Electron-ish heavyweight, slower to open than native apps. The practical pattern many people land on: ONLYOFFICE for client-facing documents, LibreOffice for everything else.