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Collabora

Collabora is an open-source, online office suite built on LibreOffice.

Ad-Free European Privacy Friendly Open Source Self-Hostable Open Data Works Offline
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Description

Collabora Online is a powerful, open-source office suite based on LibreOffice technology, designed for real-time collaboration in a web browser. It is developed by Collabora Productivity, a major contributor to the LibreOffice project, and is widely recognised for its commitment to digital sovereignty, privacy, and user control. Unlike proprietary alternatives, Collabora Online allows organisations to host their own instance, ensuring full control over data and infrastructure. This makes it particularly attractive for governments, educational institutions, and businesses seeking to avoid dependency on Big Tech platforms.

In 2025, Collabora Online achieved significant milestones, including the release of a new desktop version, bringing the same collaborative features to Windows, macOS, and Linux. The platform is fully GDPR-compliant and does not include any spyware or data collection mechanisms. The year also saw a major UI/UX refresh, with context-aware design, smart tabs, and a cleaner layout, all informed by over 1,000,000 data points from real user sessions. Performance improvements reduced document load times by 2–3 seconds, and the introduction of PDF 2.0 compatibility and digital signing further enhanced its utility for modern workflows.

Collabora Online is used by organisations federal offices and is integrated into platforms like Nextcloud. Its commitment to open standards, user privacy, and continuous improvement ensures that it remains a leading choice for ethical and sustainable productivity tools

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Sustainability Features of Collabora

Ad-Free - Services that do not display advertisements to users, ensuring a cleaner and more private experience.

There is no advertising, data mining, or tracking in Collabora.

European - Based in Europe, ensuring compliance with GDPR and European privacy and labor regulations.

Collabora is based in the United Kingdom, ensuring compliance with GDPR

Privacy Friendly - It does not track users unnecessarily.

Collabora is GDPR-compliant, with no data mining or tracking. For some reason, internally, the tools may use Google products for communication and sharing information. It's unclear what information is shared and why the team doen't trust open-source alternatives.

Open Source - Free and Open-Source Software

Collabora is open-source with a strong focus on digital sovereignty and user control.

Self-Hostable - Services that can be hosted by users, giving full control over data and enhancing privacy.

Collabora can be self-hosted, further ensuring data sovereignty and privacy

Open Data - Supports open data standards and transparency, allowing users to access and control their data.

Collabora is fully compatible with Microsoft Office and OpenDocument formats.

Works Offline - Works even without internet connection

Collabora clients allow you to create, edit, and save documents offline. Changes sync with your Nextcloud or other cloud storage when you reconnect.

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Summary

Collabora Online is a robust, privacy-respecting alternative to mainstream office suites, offering real-time collaboration, self-hosting, and full compatibility with industry-standard file formats.

Sustainability Score
87

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OnlyOffice is an open-source office suite with self-hosting options and GDPR compliance.

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OnlyOffice desktop clients work fully offline, reducing reliance on cloud services and internet connectivity.
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