CrossFTP - CrossFTP is a powerful FTP and Amazon S3 client. DownloadDownload CrossFTP/Pro/Enterprise for Windows, Mac . FeaturesCrossFTP.
Cryptomator - When it comes to saving your files on a cloud server, it is important to ensure the security of those files. Keeping your delicate files out of the wrong hands can save you a lot of time and hassle. Read more about Cryptomator.
Storage Made Easy - The leading Enterprise File Share and Sync solution
Axcrypt - AxCrypt - Password Protect Files With Strong Encryption. AxCrypt is the leading open source file encryption software for Windows.
S3Fox Organizer - The S3Fox Organizer(S3Fox), offers the ability to upload or download files to and from Amazon S3.
Microsoft BitLocker - BitLocker is a full disk encryption feature included with Windows Vista and later.