FTPbox - FTPbox is an open-source application that allows you to synchronize your files to your own host...
Mega - Secure File Storage and collaboration
Dropbox - Online Sync and File Sharing
Google Drive - Access and sync your files anywhere
Syncany - Syncany is an open-source cloud storage and filesharing application.
Zaclys ownCloud provider - Zaclys provide an easy to use ownCloud solution with 1Go free. And also dedicated servers !