Collabora Online
LibreOffice in the browser, built by Collabora. Integrates with Nextcloud for a fully European document editing suite.
Quick facts
It brings real LibreOffice-grade document editing into the browser, and pairing it with Nextcloud gives you a fully self-hosted alternative to Google Docs with no cloud dependency at all.
Performance on very large or formula-heavy documents lags behind Google Docs or Microsoft 365, and setting up the Nextcloud integration takes more technical effort than a plug-and-play SaaS tool.
Why does it score 90?
Based in Cambridge, UK – outside the EU/EFTA, which caps the legal score even though it's a European company.
Independently owned, with no outside investors or parent company.
Collabora runs its own infrastructure in the UK rather than a third-party cloud.
Fully open source and GDPR-compliant – the code powering the editor is entirely public.
See how they compare
Collabora OnlineWhat does it replace?
Google Docs 
Microsoft 365 
Microsoft Word 
Microsoft Excel 
Microsoft Powerpoint 
Google Slides More European Project management alternatives
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