OpenCloud

OpenCloud is an open-source file sync and share platform that also functions as a backup solution for team data. It combines file storage, versioning, and restore features in one deployable system. The software supports on-premises installation, giving administrators full control over data retention and recovery policies.

OpenCloud runs on Linux, uses a modular architecture, and includes file versioning, trash retention, and restore APIs. It integrates with LDAP and OIDC for authentication. Backups are handled through configurable retention schedules and CLI tools for snapshot management. The project is developed by OpenCloud GmbH and is licensed under the Apache 2.0 open source license.

OpenCloud is designed for organizations that need self-hosted file storage with built-in backup workflows. It is free to use and self-host, with no paid tiers. The documentation at docs.opencloud.eu provides deployment guides for Linux servers. Notable adoption includes European public sector institutions seeking GDPR-compliant file storage.