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Open source office suite with high Microsoft format compatibility, real-time co-editing, and self-hosted or cloud deployment.
Latvian open source office suite with Word-compatible docs, sheets, and slides.
ONLYOFFICE Docs is a Latvian open source office suite built around the highest OOXML fidelity in the open source world: documents, spreadsheets, and presentations created in Microsoft Office open and save without layout breakage. That makes it the pragmatic choice for teams leaving Microsoft 365 who still exchange .docx and .xlsx files daily.
The suite runs in the browser with real-time co-editing, comments, tracked changes, and version history, and integrates into more than 40 platforms including Nextcloud, ownCloud, Moodle, and Odoo. Desktop and mobile apps cover offline work, and the AGPL community edition self-hosts for free on your own hardware.
Key features:
- High Microsoft format compatibility for .docx, .xlsx, and .pptx round-trips
- Real-time co-editing with fast and strict modes, comments, and mentions
- Three editors covering documents, spreadsheets, and presentations
- 40+ integrations including Nextcloud, ownCloud, Moodle, and Odoo
- Self-hosted community edition free under AGPL
- Desktop and mobile apps for Windows, macOS, Linux, iOS, and Android
- Plugins and macros extend editors with translation, OCR, and custom tools
ONLYOFFICE is developed by Ascensio System SIA, headquartered in Riga, Latvia, and the self-hosted deployment model keeps documents entirely on infrastructure you control, with GDPR compliance by design for European organizations.
Ideal for organizations that need Word-grade format fidelity in a European, auditable office suite.
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