因为项目中用到，邀月稍微找了一下。
1、 Application for uploading modified Files to a FTP Server
http://www.codeproject.com/KB/IP/net_ftp_upload.aspx
2、FTP client library for C#
http://www.codeproject.com/KB/IP/ftplibrary.aspx
3、An FTP client library for .NET 2.0
http://www.codeproject.com/KB/IP/FtpClient.aspx
4、Simple FTP demo application using C#.Net 2.0
http://www.codeproject.com/KB/IP/SimpleFTPDemo.aspx
5、FTP component written with fully managed code
http://www.codeproject.com/KB/applications/ASPNetFileManagement.aspx
6、EasyFtp 1.3.2 (for Applications)
http://www.codeproject.com/KB/applications/EasyZip.aspx
7、FtpPublisher, An FTP File Synchronization Tool
http://www.codeproject.com/KB/cs/FtpPublisher.aspx
8、Net FTP Client,
This is a pure .Net implementation of the FTP client protocol. It aims to run both in Microsoft's .Net CLR and the Mono CLR.
https://sourceforge.net/projects/ftpdotnet/
9、File Syncer
File syncer between folders and ftp servers.
https://sourceforge.net/projects/syncer/
10、AutonomaFTP
AutonomaFTP is a handy tool for website developers: it monitors a local directory and, each time a new file is created, it automatically sends it to the server through FTP. Requires .NET Framework 2.0 or higher.
https://sourceforge.net/projects/autonomaftp/
11、Ftp4net
Ftp4net is a C# class for communication with FTP Server, which conforms to the RFC 959 (FTP). It\'s an API that handles all FTP protocol commands. This class is designed for creating FTP Client software with .NET
https://sourceforge.net/projects/ftp4net/files/
12、#Ftp#
#Ftp# is a fully managed Ftp Client in C# , with features including a site manager , queued tasks scheduler . #Ftp# is based on Indy Sockets library
https://sourceforge.net/projects/ftpclient/
13、DotNetCommonUpload
A Common interface to upload and manage all upload files. It's write by asp.net. It's help you maintenance upload images and flash files cross site. Files will be storage like : img.(your domain).com flash.(your domain).com
https://sourceforge.net/projects/dotnetcommonup/
14、ThinkSharp FTP Client Component for .NET
This assembly is a client component to communicate with a given FTP server. It has no GUI but rich underlaying functionalitylike detailed listing, recursive upload, download and deletion.It also supports BINARY/ASCII transer type and ACTV/PASV mode
http://sourceforge.net/projects/thinksharp-ftp/
15、FTP.NET
Multi-threaded FTP Program written in C# ，多线程，还不错！
https://sourceforge.net/projects/ftpnet/
16、FTP官方下载和异步上传例子
http://msdn.microsoft.com/zh-cn/library/system.net.ftpwebrequest%28VS.80%29.aspx