You mentioned that "openSSH is not maintained anymore". I don't agree. According to the OpenSSH home page the last release was OpenSSH 4.6/4.6p1 on March 9, 2007.

If you meant specifically OpenSSH for Windows, OpenSSH_4.6p1 has already been released for Cygwin. (By the way, IMHO, getting any real work done on Windows without Cygwin is an exercise in futility.)

If you are referring specifically to Network Simplicity OpenSSH for Windows, the author's stated reason that he doesn't maintain it any more is that "I no longer have the time to maintain a package that is, for the most part, unnecessary due to improvements in the installation process of Cygwin." I agree, the Cygwin installation process has become fairly painless.

I would assume that SSHwindows has not been released for a few years now for the same reason, that Cygwin is now a good alternative.