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