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OpenCloud

OpenCloud is an open source file sync and sharing platform for organizations that need data sovereignty: self-hosted, S3-compatible storage, and a modern web collaboration interface. Apache-2.0 licensed.

5.2K stars178 forksGoApache-2.0Active this week
Open source alternative toMicrosoft 365Google WorkspaceBox

What OpenCloud does

OpenCloud is an open source file sync and sharing platform that gives organizations a self-hosted alternative to Google Drive and Dropbox with full data sovereignty, S3-compatible backend storage, and a modern web collaboration interface.

The Problem

Google Drive, Dropbox, and Microsoft 365 store organizational files on third-party infrastructure outside the organization's direct control. For healthcare, legal, government, and other regulated sectors, this creates compliance friction. Audit trails for data access are limited and organizations cannot guarantee data residency. On-premises file sharing without a managed platform requires manually configured servers with no built-in access control.

How OpenCloud Solves It

OpenCloud provides a complete, self-hosted file platform: S3-compatible object storage backend, a web-based file manager and sharing interface, role-based access control, file versioning, sharing links, and office document collaboration integration. Deployed as Docker containers, it targets the compliance requirements of organizations that must keep files within their own infrastructure boundary. Apache-2.0 license applies.

Key Features
  • S3-compatible backend: deploy with any S3 object storage, on-premises NAS, or local filesystem
  • Web interface for file management, sharing links, and collaborative folder access
  • File versioning and audit logging for compliance and change tracking
  • LDAP, OIDC, and SAML integration for enterprise identity provider authentication
  • Scales horizontally for large organizational deployments
Who It's For

OpenCloud is best for organizations in regulated sectors, such as healthcare, legal, and government, that need on-premises file sharing with audit trails, role-based access control, and no third-party data processing.

Compared to Google Drive

Unlike Google Drive, which stores all files on Google's infrastructure and processes metadata for Google's services, OpenCloud is self-hosted with Apache-2.0 licensing. Your files, metadata, and audit logs remain within your own infrastructure boundary.

GitHub Activity

5.2KStars
178Forks
326Open Issues
Apache-2.0License

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