Nextcloud

Nextcloud is the industry-leading self-hosted content collaboration platform trusted by millions of users worldwide. With over two decades of development and a thriving global community, Nextcloud provides complete data sovereignty for organizations and individuals who refuse to compromise on privacy. Whether you're syncing files, collaborating on documents with Collabora Online or OnlyOffice, hosting encrypted conversations via Talk, or managing calendars and contacts, every feature is designed to keep your data under your complete control—no vendor lock-in, no corporate surveillance, no surprise policy changes. Deploy it on-premises, in your private cloud, or at a hosting provider of your choice and enjoy enterprise-grade reliability with full GDPR compliance.