ownCloud 4 introduces file versioning and rollback, enhanced encryption, a new API and fast, easy viewing of ODF files

Boston, MA – May 22, 2012 — / — ownCloud, the popular open source file sync and share project, today released version 4 of its community edition – adding innovations and enhancements that make the popular project even more flexible, secure and innovative.

ownCloud 4 – built through active community support – adds innovative features like file versioning, – which actively saves files, allowing users to “rollback” to previous versions – and a new API — giving developers an easy, stable and supported way to develop applications on top of ownCloud capabilities.

The latest version, updated from ownCloud 3 released January 30, also enables users to view Open Document Format (ODF used by LibreOffice, Apache OpenOffice and others) files – quickly and easily without having to download them – something only ownCloud offers.

In addition, ownCloud 4 includes an “experimental” feature for mounting of external file systems – including Dropbox, FTP and Google Drive as well as other popular consumer applications – enabling users to have all their file sync and share tools in a single ownCloud interface.

“Version 3 represented a great technology leap forward. As our community continues to grow, Version 4 has benefited greatly, and the result is the most innovative and flexible sync and share platform to date,” said Frank Karlitschek, founder ofownCloud. “The latest ownCloud offers features businesses and service providers have been asking for, and adds new features and applications that meet the needs of the community and will greatly enhance our upcoming commercial editions.”

With more than 450,000 users, ownCloud offers the ease-of-use of Dropbox with more flexibility and security. ownCloud users can run their own file sync and share services on their own hardware and storage, use popular public hosting and storage offerings, or both.

Other major improvements
Drag & Drop File Uploading – Enables end users to upload a file from a browser without installing a client. Simply open a browser, log in and then drag from the desktop into the ownCloud window.

Shared Calendars and Calendar categories – End users can sync their own calendar, but also share their calendar with others, enabling them to see and schedule appointments while looking at the user’s schedule.

File Encryption – new server side encryption increases file security while at rest.

ownCloud 4 also adds a to-do syncing plug-in, improved contacts and groups, improved file sharing, enhanced the photo gallery, improved system performance, easier installation of third party plug-ins and more. Complete details can be found

About ownCloud Community
ownCloud began at a KDE community event in 2010, aiming to bring greater flexibility, access and security to data in the cloud. ownCloud enables universal access to files through the widely implemented WebDAV standard, providing a platform to easily view and sync contacts, calendars and bookmarks across devices while supporting sharing, viewing and editing via the web interface. Installation has minimal server requirements, doesn’t need special permissions and is quick. ownCloud is extendable via a simple, powerful API for applications. For more information, please visit:

About ownCloud Inc.
Based on the popular ownCloud open source community project, ownCloud Inc. was founded in 2011 to bring greater flexibility, access and security to unstructured data in enterprises. Company headquarters are in Boston, with European headquarters in Nuremberg, Germany. For more information, visit:

Corporate Headquarters
ownCloud, Inc.
10 Foster Road
Lexington, MA 02421
phone +1 (877) 394-2030
fax +1 (877) 695-8349

European Headquarters
ownCloud GmbH
Schloßäckerstr. 26a
90443 Nürnberg
phone +49 911 21645079
fax +49 911 4186451

Source: ownCloud


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