The .NET SFTP Component is the ultimate in reliability and security. Use public or private keys with passphrases. RSA and DSA keys in OpenSSH or Putty format are supported. The .NET SFTP Library is the only SSH component available where you can unplug the network cable in the middle of a transfer, plug it back in, and it resumes right where it left off. Synchronize folder trees. All the features you would expect and so much more.