ownCloud

ownCloud gives you web services under your control. It is a self-hosted open source platform with file sync & sharing at its core and available clients for desktop and mobile. The web frontend has apps for Pictures, Calendar, Contacts, News/RSS, Bookmarks, Notes, Music and much more via an open app platform! ownCloud Server can be installed on Windows and Linux operating systems, and is available via packages, sources, or a one file php installer.