OpenSSH for Windows
http://sshwindows.sourceforge.net/
OpenSSH for Windows is a free package that installs a minimal OpenSSH server and client utilities in the Cygwin package without needing the full Cygwin installation.
copSSH - OpenSSH for Windows
http://www.itefix.no/phpws/index.php?module=pagemaster&PAGE_user_op=view_page&PAGE_id=12&MMN_position=149:149
copSSH is an ssh server and client implementation for windows systems. It is a yet another packaging of portable openssh, cygwin, some popular utilites, plus implementation of some best practices regarding security.