Create your own cloud storage service that you control with a service called ownCloud. With it, you’ll get syncing files, notes, calendars, and more. The best part: it only takes about five minutes to get it set up.
OwnCloud is free and open source software that operates as a very simple way to set up your own syncing, Dropbox-like cloud storage system on your own server or web site.
via How to Set Up Your Own Private Cloud Storage Service in Five Minutes with OwnCloud.