With Rebex FTP, you can establish multiple concurrent FTP connections from the same application/machine/client to the same FTP server or to multiple different FTP servers.
Each Rebex.Net.Ftp object represents a single FTP connection and you can use many instances of these objects in your applications – it doesn't really matter whether they are connected to the same FTP server or difference FTP servers.
(Please note that some FTP servers are configured to only allow a certain number of connections from a single IP address - of course, any such limitation then applies to all FTP clients connecting to it, including Rebex FTP.)