.NET FTP/SSL, SFTP Component 1.5

The SfbFtp .NET class library offers a number of classes that make the work of transferring files directly from your application using FTP/SSL (an extension of FTP which is fast becoming a standard for secure FTP) and SFTP (a powerful and secure file-transfer protocol that runs over an SSH session) more easily. The FtpClient and SftpClient classes provide a number of convenience asynchronous methods and events that allow you to quickly create applications which can handle file transfers simultaneously. The library also offers the flexibility, ease of use and rapid development features of a component without the complexities of working with the native socket class or in-depth knowledge of how the File Transfer Protocols are implemented.
Key Features
Fully support both event-driven (asynchronous) and blocking (synchronous) application designs.
Supports IPv6.
Support SSL2, SSL3, PCT and TLS.
Explicit and implicit FTP/SSL support.
Large file support (can be greater than 4GB).
Active and passive transfer modes.
Supports Binary and ASCII transfers.
Wildcards, regular expressions and symlinks supported.
Stream support.
Compression support (MODE Z).
Reusable block mode transfer support (MODE B).
HttpConnect, Socks4, Socks4A and Socks5 proxy servers support.
WebRequest and WebResponse support (this allows you to download files using any protocol).
Ability to resume file transfers after interrpution.
Raw FTP command and response support.
File transfer monitoring support with progress event.
Compliant with RFC 959, RFC 1579 and many common extensions.
Uniform and comprehensive error handling with .NET exceptions.