Dropbear SSH Server and Client - Dropbear is a relatively small SSH 2 server and client.
Bitvise SSH Server (WinSSHD) - WinSSHD is our SSH server for all Windows NT-series operating systems.
OpenSSH - OpenSSH is a free version of the SSH connectivity tools that technical users rely on.
Ethereal - Ethereal® is used by network professionals around the world for troubleshooting, analysis...
Titan FTP Server - Windows FTP Server with SFTP and SSL. Includes events automation, host key support, and strong security.
socat - socat is a relay for bidirectional data transfer between two independent data channels.