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The most popular open source content collaboration platform for tens of millions of users at thousands of organizations across the globe
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Nextcloud is an open source content collaboration platform that offers self-hosted file sync and share, along with integrated communication and productivity tools for organizations and individuals seeking data privacy and control.
Nextcloud is a self-hosted, open-source platform that serves as a secure alternative to proprietary cloud services like Dropbox, Google Drive, and Microsoft 365. It enables users to store, sync, share, and collaborate on files, calendars, contacts, emails, and more, all while maintaining full control over their data on their own infrastructure.
The project solves key problems such as data privacy risks, vendor lock-in, compliance challenges (e.g., GDPR, HIPAA), and the high costs of commercial clouds by providing a customizable, extensible suite that scales from personal use to enterprise deployments.
It is built for public sector organizations, enterprises, educational institutions, service providers, and home users who prioritize digital sovereignty, secure remote work, and cost-effective collaboration. Nextcloud was developed as a community-driven fork of ownCloud to ensure it remains fully open source without corporate restrictions.
This project is useful for:
Last updated: 2026-03-24
Yes / Open Source (Core software is free under AGPLv3; enterprise support and subscriptions available for professional needs.)
Yes — https://github.com/nextcloud/server
Yes — Set up a local dev environment (docs.nextcloud.com/server/latest/developer_manual), pick a 'good first issue', create a signed-off PR, and follow guidelines at nextcloud.com/contribute/. Join via issues, PRs, or feedback on the forum.
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