Hi,
I just published a new multiplatform open source FTPS command line client on Codeplex:
http://www.codeplex.com/ftps
The aim of this FTP/FTPS client is to support the advanced features provided by most modern FTP servers, primarily, but not limited to, encryption via SSL/TLS and UTF8.
The idea of this client was born while preparing some material for a technical speech session I was going to give at the Italian Microsoft TechDays - WPC 2008, about IIS 7.0 new features,
including the Microsoft FTP for IIS 7.0 add in and its freshly introduced support for SSL/TLS.
Looking for a free client to be used during my session demos, showing interoperability with other platforms, I realized that there was no single piece of software supporting all the features I needed, at least released as free software.
Furthermore, I wanted to provide a sample on how to connect to a FTP server using SSL using Microsoft .Net and the Powershell, but the standard System.Net.FTPWebRequest provided by the framework was not enough for my needs.
The SSL/TLS support is implemented as stated in the RFC 4217 document.
FTPS is not the only target of this client. It was also designed to overcome a lot of the limitations of standard FTP command line clients that come on most platforms.
The client is released as open source.
It requires the .Net Framework 2.0 or Mono 2.0. It's supported on Windows 2000/XP/2003/Vista/2008, Linux and Mac OS X (via Mono 2.0)
I tested it against Microsoft FTP for IIS 7.0, vsftpd, wu-ftpd and FileZilla server, to name a few.
Hope you might find it useful! :-)
Sincerely,
Alessandro Pilotti