Open source office suite with desktop, mobile and self-hosted editors
ONLYOFFICE is an office suite from Ascensio System with editors for documents, spreadsheets, presentations, PDFs and forms, built around Microsoft Office formats. The desktop and mobile apps are free, and the online editors can be self-hosted or integrated into Nextcloud and other platforms, with paid cloud and enterprise editions. It supports real-time co-editing, plugins and AI assistants.
- features
- 6
- alternatives
- 12
- platforms
- 7
- Updated
- Oct 12, 2026
Features
Our take
Pros
- Strong compatibility with Microsoft Office formats
- Free desktop and mobile apps, plus self-hostable online editors
- Real-time co-editing and Nextcloud integration
Cons
- A self-hosted server needs technical setup
- Enterprise features and support require paid editions
- Fewer advanced features than Microsoft Office
Editorial assessment by the Alternatives.tools team, based on what the product is known for. Not a user review.
Best ONLYOFFICE alternatives
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Google WorkspaceFreemiumGoogle's cloud suite: Gmail, Drive, Docs, Sheets, Slides and Meet
WPS OfficeFreemiumFree office suite with Writer, Spreadsheet, Presentation and PDF tools
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Zoho WorkplaceFreemiumZoho's business suite with mail, documents, file storage and team chat
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