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Developer(s)ownCloud GmbH, Community
Stable release2.0.0 [±][1]
Written inPHP, Javascript, Go
Operating systemServer: Linux
Clients: Windows, macOS, Linux, Android, iOS
TypeOnline storage, data synchronization
LicenceServer: AGPL-3.0-or-later
Enterprise: Proprietary

ownCloud is an open-source software product for sharing and syncing of files in distributed and federated enterprise scenarios. It allows companies and remote end-users to organize their documents on servers, computers and mobile devices and work with them collaboratively, while keeping a centrally organized and synchronized state. ownCloud supports extensions like online document editing (Collabora, OnlyOffice, Microsoft 365 and Microsoft Office Online), calendar and contact synchronization. Users can work with documents from a browser, and there are clients for a variety of operating systems as well as mobile clients for Android and iPhone.

Starting with version 2.0.0 "Infinite Scale", released November 2022, ownCloud is programmed in Go, and its web interface is written in Vue.js. Microservices, cloud-native Technologies and a three-tier-architecture without database replaced the formerly used LAMP stack while providing full API compatibility to prior versions. Up to version 10 (which unintuitively preceded version 2.0.0), ownCloud used PHP to access SQLite, MySQL or PostgreSQL databases on the server.


ownCloud is a company from Nürnberg, Germany, focused on enterprise users of its software. The ownCloud project was started in January 2010 and the company was founded in 2011.

In 2016 one of the founders left the company, creating the fork Nextcloud. ownCloud GmbH continued operations, and in July 2016 secured financing from new investors and took over the business of the American company ownCloud Inc.[2][3]

In November 2022, ownCloud published version 2.0.0 "Infinite Scale", which was developed with help from the European Organization for Nuclear Research (CERN) and is a complete rewrite in the Go programming language. CERN uses ownCloud with its EOS filesystem to handle (as of 2021) 12 petabytes of data in 1.4 billion files.[4]

Server releases[edit]

Version[5] Date New Features
Current stable version: 2.0.0 "Infinite Scale" November 30, 2022 Complete overhaul of the backend, rewritten in Go and Vue.js, in cooperation with CERN. Introducing Spaces – a new concept for team work with files.
Current stable version: 10.12.0 March 12, 2023 Dropped suppport for PHP 7.3, changed workflow for persistent major versions (added checkbox to select versions to keep), added support for login policies, extended trashbin, mounts, shares and checksum functions.
Older version, yet still maintained: 10.11.0 September 20, 2022 Many bugfixes, edit permission for public links on single files, sharing with multiple users at once, inviting new guests to Custom Groups.
Older version, yet still maintained: 10.10.0 May 14, 2022 Many bugfixes, improved management of migrations, session handling and storage.
Older version, yet still maintained: 10.9.1 January 13, 2022 Prevent encrypted files from being corrupted when overwriting them, Marketplace not working after upgrade from 10.8 to 10.9, Fixes for the newly introduced feature to store the author of versions
Older version, yet still maintained: 10.9 December 23, 2021 Initial sync faster, more detailed file locking, version control and public sharing
Older version, yet still maintained: 10.8 July 21, 2021 New ownCloud Web browser frontend, new login UI, better caching for external storages like Windows Network Drives
Older version, yet still maintained: 10.7 March 26, 2021 Preparations for upcoming workstream integrations, UI improvements, improved encryption efficiency
Older version, yet still maintained: 10.6 December 16, 2020
Older version, yet still maintained: 10.5 August 3, 2020 Official support for PHP 7.4, manual file locking in the web interface, improved background process for metadata of federated shares
Older version, yet still maintained: 10.4 March 5, 2020 Expiration dates for user and group shares, supports MariaDB up to 10.4, PostgreSQL up to 10, share indicator on webUI
Older version, yet still maintained: 10.3 October 15, 2019 New Media Viewer, improved OAuth2 session handling, improved User/group sharing UI
Older version, yet still maintained: 10.2 May 16, 2019 Advanced Sharing Permissions, SecureView, Improved Public Links, Storage Encryption with HSMs
Older version, yet still maintained: 10.1 February 7, 2019 Microsoft Office Online Integration, File Locking, Semantic Versioning, OpenCloudMesh 1.0 compliance
Older version, yet still maintained: 10.0 April 27, 2017 File integrity checks, guest accounts, custom groups, multiple link sharing, new app marketplace



Desktop clients for ownCloud are available for Windows, macOS, FreeBSD and Linux, as well as mobile clients for iOS and Android devices. Files and other data (such as calendars, contacts or bookmarks) can also be accessed, managed, and uploaded using a web browser. Updates are pushed to all computers and mobile devices connected to an account. Encryption of files may be enforced by the server administrator.[6]


ownCloud files are stored in conventional directory structures and can be accessed via WebDAV if necessary. User files are encrypted both at rest and during transit. ownCloud can synchronize with local clients running Windows, macOS and various Linux distributions. ownCloud users can manage calendars (CalDAV), contacts (CardDAV) scheduled tasks and streaming media (Ampache) from within the platform.

ownCloud permits user and group administration (via OpenID or LDAP). Content can be shared by granular read/write permissions between users or groups. Alternatively, ownCloud users can create public URLs for sharing files. Furthermore, users can interact with the browser-based ODF-format word processor,[7] bookmarking service, URL shortening suite, gallery, RSS feed reader and document viewer tools from within ownCloud. ownCloud can be augmented with "one-click" applications and connection to Dropbox, Google Drive and Amazon S3.

Enterprise customers have access to apps with additional functionality, which are intended for organizations with more than 500 users. An Enterprise subscription includes support services. Commercial features include end-to-end encryption, ransomware and antivirus protection, branding, document classification, and single sign-on via OpenID.

See also[edit]


  1. ^ "Maintenance and Release Schedule". Retrieved 2021-12-23 – via GitHub.
  2. ^ "ownCloud Secures Financing and Expands its Management Team - ownCloud". 14 July 2016.
  3. ^ "ownCloud sichert Finanzierung und baut Geschäftsführung um" (in German). 2016-06-14. Retrieved 2022-02-17.
  4. ^ "ownCloud Infinite Scale geht am CERN live". OSB-Alliance.de. OSB Alliance Bundesverband für Digitale Souveränität. Retrieved 30 March 2022.
  5. ^ "Download Server Packages". ownCloud.com. 5 January 2022. Retrieved 2022-02-02.
  6. ^ Scott Gilbertson (2014-09-08). "OwnCloud: Fiddly but secure host-from-home sync 'n' share". The Register. Retrieved 2016-09-20.
  7. ^ Neil Bothwick (2014-02-27). "OwnCloud: Work together online". APC. Archived from the original on 2014-04-03. Retrieved 2022-02-02.

External links[edit]