OneWay is a free and open source, lightweight contextual FTP, SFTP file uploader for Mac OS X application.
It allow you to upload any types files/folder directly from your Finder and then save them in frequently used locations in your Context Menu for quickly access. Simply Select the Files or Folders you want to upload and then ctrl+click to send them anywhere such as Your FTP, SFTP or Amazon S3. it also support for SSH public key authentication.
Download : OneWay