ownCloud is an online file synchronization and sharing solution. It's easy to use as consumer-grade product, but can be hosted on private servers or data centers. It integrates with existing IT business infrastructure as well, and this allows to constrain and customize security and functional requirements. It comes with a simple user interface for file uploading, viewing or editing, contacts and calendars, bookmarks and media files.
minor feature: Set version to 9.1.8.