Syncany is an open source document storage and sharing tool. The latest version is fairly recent and is not yet fully stabilised.
It offers features such as encryption of documents and now uses a SparkleShare fork for the back end.
It allows the use of all forms of remote storage: NFS, FTP, SFTP, IMAP, Google Storage, Amazon S3, RackSpace Cloud Files, WebDAV, Picasa web album, Windows Share, Box Net, ...
Its interface is very user friendly and ergonomic design is attractive.
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