Pragma FortressSSH Server
   Supports SSH1, SSH2, port forwarding, and SFTP. [Windows XP/2000/NT]
   http://www.pragmasys.com/FortressSSHServer.asp

WinSSHD
   An SSH2 server for the Windows NT/2000. Additionally supports secure file transfer with SFTP and SCP, TCP/IP tunneling. Evaluation version available.
   http://www.bitvise.com/winsshd.html