1)   ALFTP 4.1Beta2
User-friendly FTP client and server. Convenient ALFTP Client and Server Explorer windows let you browse or drag and drop files just like in Windows Explorer. Transfer queues simplify file management. Share files with the world's easiest FTP server.

 2)   .NET FTP/SSL, SFTP Component 1.5
SfbFtp .NET class library offers a number of classes that make the work of transferring files directly from your application using FTP/SSL and SFTP more easily.