Quote:ownCloud is a software suite that provides a location-independent storage area for data (cloud storage). The project was launched in January 2010 by KDE developer Frank Karlitschek to create a Free software alternative to commercial cloud providers. In contrast to commercial storage services, ownCloud can be installed on a private server at no additional cost.

Quote: File storage in conventional directory structures (also via WebDAV)
Cryptography
Synchronization of personal computers
Calendar (also as CalDAV)
Task scheduler
Address book (also as CardDAV)
Music streaming (through Ampache)
User and group administration (via OpenID or LDAP)
Sharing of content across groups or public URLs
Online text editor with syntax highlighting and code folding
Bookmarking
URL shortening Suite
Photo gallery
PDF viewer (using pdf.js)
Viewer for ODF Files (.odt, .odp, .ods)
Logging Module: supports extensive logging of file-related actions, logs, who accessed what, when and from where. (Only available in the ownCloud Business, Enterprise and Education Editions)