I was looking for an alternative to Dropbox to run cloud on my own server at home and office. This software is open source software, and it is self hosted. I don’t
have to trust third party with my data. I found this software easy to install and quite useful. I started to use it for syncing files and other data. I have been using for couple of months and it has been proven reliable alternative to Dropbox. There are clients available for MS-Windows, OS X, Linux, and mobile apps for iOS and Android devices (or simply access data using the ownCloud web front-end).
Download url : owncloud.org
License : AGPLv3
Targets : Home users/IT departments/Sysadmins
Purpose : Cloud storage (Data synchronization)
Operating system : Cross-platform