ownCloud

ownCloud Infinite Scale, usually shortened to oCIS, is the rewritten foundation of the ownCloud file sync and share platform. It replaces the older application and its external dependencies with a set of Go services delivered as one binary, so a working instance does not require a database or an identity provider to be stood up first.

Storage and access go through reva using open protocols including WebDAV and CS3, which is what lets the existing web, Android, iOS, and desktop clients talk to it. Authentication is OpenID Connect, either against an external provider such as Keycloak or against the embedded LibreGraph Connect identity provider. The multiservice architecture means services start separately and infrastructure you already run can be reused instead of duplicated.

A few properties define what operating it actually looks like.

• Single artifact: one binary or container, with scale changed by configuration rather than a different install.
• File spaces: spaces synchronize and share through a server backend the clients already understand.
• Web office: Collabora Online, OnlyOffice Docs, and Microsoft Office Online Server integrate for document editing.
• WOPI gateway: collaborative editing is brokered through the CS3 WOPI application gateway.
• Batteries included: demo users and a bundled web interface come up with no external services configured.

The Docker quickstart mounts a config directory and a data directory, initializes, and serves the interface on port 9200. Building from source needs Go 1.25.10 or later plus a C toolchain, since some dependencies compile C. The prerequisites and general deployment pages are worth reading before a first production install.