core

# ownCloud Core

<!-- OSPO-managed README | Generated: 2026-04-16 | v2 -->

[![License](https://img.shields.io/badge/License-AGPL--3.0-blue.svg)](COPYING) [![ownCloud OSPO](https://img.shields.io/badge/OSPO-ownCloud-blue)](https://kiteworks.com/opensource) [![Docker Hub](https://img.shields.io/docker/pulls/owncloud)](https://hub.docker.com/r/owncloud/server)

ownCloud Core is the server-side component of ownCloud Classic, providing file storage, synchronization, and sharing trusted by over 200 million users worldwide. It includes WebDAV, CalDAV, and CardDAV servers, a plugin architecture for apps, user and group management, encryption support, external storage backends, and a comprehensive REST API. The server runs on PHP with support for MySQL, MariaDB, PostgreSQL, and SQLite databases.

## Part of ownCloud Classic

This is the main repository for [ownCloud Classic](https://github.com/owncloud/core). It is the foundation that apps like [Activity](https://github.com/owncloud/activity), [Calendar](https://github.com/owncloud/calendar), [Contacts](https://github.com/owncloud/contacts), and many others extend. The server is available as a Docker image on [Docker Hub](https://hub.docker.com/r/owncloud/server).

For the next-generation ownCloud platform, see [ownCloud Infinite Scale (oCIS)](https://github.com/owncloud/ocis).

## Getting Started

For installing ownCloud Classic, see the official [installation manual](https://doc.owncloud.com/server/latest/admin_manual/installation/).

### Development Build Prerequisites

- **Composer v2**
- **Yarn** and **Node.js** (v14 or higher)

```bash
make
```

## Documentation

- [ownCloud Classic documentation](https://doc.owncloud.com)
- [Developer documentation](https://doc.owncloud.com/server/latest/developer_manual/)
- [CHANGELOG.md](https://github.com/owncloud/core/blob/master/CHANGELOG.md)
- [Conventional Commits specification](https://www.conventionalcommits.org/)

## Community & Support

**[Star](https://github.com/owncloud/core)** this repo and **Watch** for release notifications!

- [ownCloud Website](https://owncloud.com)
- [Community Discussions](https://github.com/orgs/owncloud/discussions)
- [Matrix Chat](https://app.element.io/#/room/#owncloud:matrix.org)
- [Documentation](https://doc.owncloud.com)
- [Enterprise Support](https://owncloud.com/contact-us/)
- [OSPO Home](https://kiteworks.com/opensource)

## Contributing

We welcome contributions! Please read the [Contributing Guidelines](CONTRIBUTING.md)
and our [Code of Conduct](CODE_OF_CONDUCT.md) before getting started.

### Workflow

- **Rebase Early, Rebase Often!** We use a rebase workflow. Always rebase on the target branch before submitting a PR.
- **Dependabot**: Automated dependency updates are managed via Dependabot. Review and merge dependency PRs promptly.
- **Signed Commits**: All commits **must** be PGP/GPG signed. See [GitHub's signing guide](https://docs.github.com/en/authentication/managing-commit-signature-verification).
- **DCO S