Nextcloud

Nextcloud is an open-source, self-hosted platform for file storage, sharing and collaboration. It gives individuals and organisations their own alternative to cloud services such as Google Drive, Dropbox and Microsoft 365, running on servers they control. Data sovereignty is its central purpose. Many governments, public institutions, universities, healthcare providers and companies - particularly in Europe - want to keep files and communications under their own control for privacy, legal compliance and independence from large US technology providers. Nextcloud lets them host the platform on their own servers or with a trusted local provider, keeping data within their jurisdiction. It is developed by a German company and has been adopted widely by European public sector organisations. The core is file synchronisation and sharing: desktop and mobile clients sync files across devices, users share files and folders internally or by public link with passwords and expiry dates, and features such as versioning, end-to-end encryption options, file locking and external storage connections support serious use. Around that core, Nextcloud has grown into a collaboration suite. Nextcloud Talk provides chat and video calls; Nextcloud Office enables collaborative document editing; Groupware includes calendars, contacts and email; and Deck offers kanban boards. An app store adds many more features, and an AI assistant can run with local models so data does not leave the server. The server software is free and open source, while Nextcloud Enterprise offers support, scalability features and compliance for organisations. The trade-offs are operational: self-hosting requires administration, updates, backups and proper server resources, and performance and polish can lag behind the largest commercial cloud services, especially at scale. Alternatives include Google Workspace and Microsoft 365 for managed productivity suites; Dropbox and Box for cloud file sharing; ownCloud and Seafile for self-hosted file sync; Proton Drive for encrypted cloud storage; Syncthing for peer-to-peer sync without a server; and Mattermost or Rocket.Chat for self-hosted chat. Choose Nextcloud when you want a self-hosted alternative to Google Drive and Microsoft 365 that keeps your data under your control.