OpenSSH - OpenSSH is a free version of the SSH connectivity tools that technical users rely on.
Bitvise SSH Server (WinSSHD) - WinSSHD is our SSH server for all Windows NT-series operating systems.
Dropbear SSH Server and Client - Dropbear is a relatively small SSH 2 server and client.
Titan FTP Server - Windows FTP Server with SFTP and SSL. Includes events automation, host key support, and strong security.
MobaSSH - Enhanced SSH server for Windows with Unix tools and much more
PowerShell Server - PowerShell Server is a full-featured SSH 2.