Copssh is an OpenSSH server and client implementation for Windows systems. You can use Copssh for remote administration of your systems or gathering remote information in a secure way.

Copssh packages portable OpenSSH, Cygwin and some popular utilites, plus implementing some best practices regarding security.

OpenSSH is a FREE version of the SSH protocol suite of network connectivity tools. It encrypts all traffic (including passwords) to effectively eliminate eavesdropping, connection hijacking, and other network-level attacks. Additionally, OpenSSH fully supports SFTP server and client roles, provides a myriad of secure tunneling and forwarding capabilities as well as a variety of authentication methods. Cygwin is a Linux-like environment for Windows. It consists of a DLL (cygwin1.dll), which emulates substantial Linux API functionality, and a collection of tools.