Collabora Online
Collabora Online is a powerful open-source office suite built on LibreOffice. Edit documents, sheets, and slides together in self-hosted environments with full file compatibility.
Open source alternative to:
Collabora Online is an open-source, browser-based office suite built on LibreOffice that enables real-time collaborative editing of documents, spreadsheets, and presentations. It is designed to be integrated into self-hosted platforms such as Nextcloud, ownCloud, and other file sync and share solutions.
Collabora provides exceptional document compatibility, supporting virtually all Microsoft Office file formats and preserving complex formatting from existing documents. Users can collaborate simultaneously with live cursors and presence indicators, and all edits are saved back to the host platform. It supports spell checking, track changes, macros, and advanced formatting features expected in professional office software.
As the commercial offering from Collabora Productivity, the open-source CODE (Collabora Online Development Edition) is available under a browser-based license and can be deployed via Docker. It is the leading open-source alternative for organizations needing a privacy-respecting, self-hosted replacement for Google Docs.
Frequently Asked Questions
How does Collabora Online integrate with Nextcloud?
Collabora Online is designed to be embedded in Nextcloud and ownCloud, so documents open and are edited directly in the browser without being downloaded. The Collabora Online app connects Nextcloud to a Collabora server, and all edits are saved straight back to your files. That makes it a privacy-respecting, self-hosted replacement for Google Docs.
How well does Collabora Online handle Microsoft Office documents?
Because it is built on the LibreOffice core, Collabora Online supports virtually all Microsoft Office file formats and preserves complex formatting from existing DOCX, XLSX, and PPTX files. You can open, edit, and save in Office formats without conversion errors, and it supports spell checking, track changes, macros, and advanced formatting. That compatibility is one of its strongest selling points.
What is the difference between Collabora Online and CODE?
CODE stands for Collabora Online Development Edition, the free open-source edition that can be self-hosted via Docker under the MPL-2.0 license. The commercial offering from Collabora Productivity adds supported, production-grade builds, regular updates, and professional support. Both are built on the same LibreOffice core, so you can start with CODE and move to the supported edition when your organization needs it.
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Project Details
Repository details
Updated 9/16/2026, 8:00:31 AM
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