OpenSSH on Windows - Port of OpenSSH server and client for Windows.
SSH Communications Security - Includes information about the SSH protocol. Has a variety of SSH products for sale, including clients, servers, and VPN software.
SSH Master FTP Site - Binaries for SSH1 and SSH2 clients and servers for Windows and Unix.
SSH Patch Repository - NCSA's collection of patches for SSH.
SSHTools - Software suite providing Java SSH API, SSH Terminal, SSH secured VNC client, SFTP client and SSH Daemon. [Open source, GPL]
