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OwnCloud logo and wordmark.svg
OwnCloud Sidebar sharing.png
Sidebar sharing in OwnCloud 8.2 web interface
Developer(s) OwnCloud Inc.,[1] Community
Stable release 9.1.0 (21 July 2016; 4 days ago (2016-07-21)) [±][2]
Preview release 9.0 [±]
Development status Active
Written in PHP, JavaScript
Operating system Server: Linux
Clients: Windows, OS X, Linux, Android, iOS
Type Online storage, data synchronization
Licence AGPLv3
Website owncloud.org

OwnCloud (stylized ownCloud) is a suite of client-server software for creating file hosting services and using them. OwnCloud is functionally very similar to the widely used Dropbox, with the primary functional difference being that OwnCloud is free and open-source, and thereby allowing anyone to install and operate it without charge on a private server. It also supports extensions that allow it to work like Google Drive, with online document editing, calendar and contact synchronization, and more. Its openness eschews enforced quotas on storage space or the number of connected clients, instead having hard limits (like on storage space or number of users) defined only by the physical capabilities of the server.


Frank Karlitschek, a KDE software developer, started developing OwnCloud in January 2010, in order to provide a free software replacement to proprietary storage service providers.

OwnCloud has been integrated with the GNOME desktop.[3] Additional projects that use or link to OwnCloud include a Raspberry Pi project to create a cloud storage system using the Raspberry Pi's small, low-energy form-factor.[4]

In April 2016 Karlitschek and many of the top contributors left OwnCloud Inc.[5][6] Five weeks later they started Nextcloud, a fork of OwnCloud.[7]



In order for desktop machines to synchronize files with their OwnCloud server, desktop clients are available for PCs running Windows, OS X, FreeBSD or Linux. Mobile clients exist 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 without any additional software. Any updates to the file system are pushed to all computers and mobile devices connected to a user's account.

The OwnCloud server is written in the PHP and JavaScript scripting languages. For remote access, it employs sabre/dav, an open-source WebDAV server.[8] OwnCloud is designed to work with several database management systems, including SQLite, MariaDB, MySQL, Oracle Database, and PostgreSQL.[9]


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 synchronise with local clients running Windows (Windows XP, Vista, 7 and 8), OS X (10.6 or later), or various Linux distributions.

OwnCloud users can manage calendars (CalDAV), contacts (CardDAV) scheduled tasks and streaming media (Ampache) from within the platform.

From the administration perspective, OwnCloud permits user and group administration (via OpenID or LDAP). Content can be shared by defining granular read/write permissions between users and/or groups. Alternatively, OwnCloud users can create public URLs when sharing files. Logging of file-related actions is available in the Enterprise and Education service offerings.[10]

Furthermore, users can interact with the browser-based text editor, bookmarking service, URL shortening suite, gallery, RSS feed reader and document viewer tools from within OwnCloud. For additional extensibility, OwnCloud can be augmented with "one-click" applications and connection to Dropbox, Google Drive and Amazon S3.

See also[edit]


  1. ^ "Official Company Website". 
  2. ^ Jobke, Morris (30 June 2016). "Maintenance and Release Schedule". Retrieved 2016-07-05. 
  3. ^ "Integrate ownCloud in GNOME". gnome.org. Retrieved 1 January 2014. 
  4. ^ "Raspberry Pi Owncloud (Dropbox Clone)". raspberrypihelp.net. Retrieved 1 January 2014. 
  5. ^ Frank Karlitschek (2016-04-27). "big changes: I am leaving ownCloud, Inc. today". blog. Retrieved 2016-06-02. 
  6. ^ Jos Poortvliet (2016-06-02). "Nextcloud is the future of open source file sync and share". blog. Retrieved 2016-06-02. 
  7. ^ Frank Karlitschek (2016-06-02). "Nextcloud". blog. Retrieved 2016-06-02. 
  8. ^ "ownCloud and sabre/dav". owncloud.org. Retrieved 7 April 2015. 
  9. ^ "Database Configuration - OwnCloud 7 Server Administration Manual 7.0 documentation". 
  10. ^ "ownCloud Server or Enterprise Edition". owncloud.com. 

External links[edit]