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. You can use COPSSH for remote administration of your systems or gathering remote information in a secure way.
SSH (secure shell) is a program enabling secure access to remote filesystems. Not everyone is aware of other powerful SSH capabilities, such as passwordless login, automatic execution of commands on a remote system or even mounting a remote folder using S