Collabora Online is an open-source collaborative office suite derived from LibreOffice, supporting real-time co-editing of documents, spreadsheets, and presentations in a browser. It integrates directly with Nextcloud, ownCloud, Seafile, and other self-hosted platforms, so your files stay on infrastructure you control.
Reviewed by Marco Wollank
Collabora Online
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Threat level
Hardened
A hardened pick. Worth the effort once you have chosen to shrink your footprint on purpose. Enough for most people. Threat levels
Our take
If you are already running Nextcloud or a similar self-hosted cloud, Collabora Online is the most complete office-editing layer available for it, offering strong LibreOffice format compatibility without sending documents to a third-party service. The free Community Edition (CODE) is well-suited to small teams and individual self-hosters. The practical limitation is that deployment requires comfort with containers and server administration. This is not a consumer product. For organisations already committed to self-hosting, that is an acceptable cost for full data sovereignty over office editing.
GitHub at a glance
CollaboraOnline/online
Stars
3,285
+ 10 this week
Last commit
9d ago
healthy
Latest release
25.04.7-mobile
7mo ago
Stars, last 31d
Website at a glance
collaboraonline.com
F score 5
Weak website security headers
Graded by Mozilla HTTP Observatory, tested 14d ago
Inspect this site yourself
Measures the security configuration of the tool's own website, not the privacy of the product itself. A strong tool can still score low here.
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