October 5, 2011
Duplicati is a free backup client that securely

stores encrypted, incremental backups on remotefile servers. It supports targets like FTP, WebDAV, SSH, Amazon S3, Cloudfiles and others.
Duplicati has built-in AES-256 encryption and backups can be signed using GNU Privacy Guard. A built-in scheduler makes sure that backups are always up-to-date. Last but not least, Duplicati provides various options and tweaks like filters, deletion rules, transfer and bandwidth options to run backups for specific purposes.
Duplicati : Duplicati is a free backup client that securely stores encrypted, incremental backups on remotefile servers.