Logo
Deploy Now

SaaS Alternative

Google Docs Microsoft 365 Zoho Docs OnlyOffice Cloud

Categories

Self-Hosted Open Source Productivity Privacy Collaboration Documents Office Suite

Stars

3288

Forks

1016

Watchers

43

Developer links

Last Updated: 07-12-2026 03:31 PM (UTC)

Collabora Office

Real LibreOffice document engineering in the browser: Collabora Online is built by the company employing much of the former SUSE LibreOffice team - not a reimplementation. This deployment runs CODE (Collabora Online Development Edition), the collabora/code server that renders and edits documents entirely server-side while browsers get high-fidelity WYSIWYG output, so layout and formatting survive round-trips that break lesser converters. Four editors ship in one container: Writer for text documents (comments, track changes with comparison and restoration, form handling), Calc for spreadsheets (advanced formulas, macros, pivot tables, per-user sheet views, server-enforced cell protection), Impress for presentations, and Draw for Visio-class diagrams. Format compatibility spans DOCX, XLSX, PPTX, the ODF family, PDF, and dozens more - including Visio and Publisher import. Real-time collaborative editing supports multiple simultaneous editors with visible cursors and commenting. The architectural point: documents are processed on your server and never leave it, which is why Collabora is the engine behind Nextcloud Office and integrates with ownCloud, Seafile, and any WOPI-speaking host - or embeds in your own application via the SDK. An admin console monitors sessions and memory. For organizations that need Google Docs-style collaboration with actual data sovereignty, this is the reference open-source answer.

Collabora Office

Benefits

  • Documents Stay on Your Server
  • All rendering and editing happens server-side on your infrastructure - true digital sovereignty for sensitive files.
  • Formats That Round-Trip
  • LibreOffice-grade filters preserve DOCX, XLSX, and PPTX layout through edits that break other converters.
  • Google Docs Collaboration, Self-Hosted
  • Multiple editors work simultaneously with live cursors, comments, and track changes.
  • Plugs Into Your Stack
  • The WOPI protocol connects Nextcloud, ownCloud, Seafile, and custom apps via the SDK.

Features

  • Writer
  • Full word processing with comments, track changes, document comparison, and form handling.
  • Calc
  • Advanced formulas, macros, pivot tables, per-user sheet views, and server-enforced cell protection.
  • Impress and Draw
  • Collaborative presentations plus Visio-class diagramming with object layering.
  • Broad Format Support
  • DOCX, XLSX, PPTX, ODF, PDF, RTF, CSV, and Visio/Publisher import.
  • Real-Time Co-Editing
  • Simultaneous multi-user editing with high-fidelity WYSIWYG rendering.
  • Admin Console
  • Monitor active sessions, documents, and memory use at /browser/dist/admin/admin.html.