PowerShell Server
PowerShell Server is a full-featured SSH 2.
18 Alternatives To PowerShell Server

Bitvise SSH Server (WinSSHD)
WinSSHD is our SSH server for all Windows NT-series operating systems.
Buru SFTP Server for Windows
Lightweight SFTP / SCP / SSH Server for Windows.
CrushFTP
CrushFTP is a robust file transfer server that makes it easy to setup secure connections with your…
Dropbear SSH Server and Client
Dropbear is a relatively small SSH 2 server and client.

MobaXterm
MobaXterm is a software that uses a set of optimized network tools included in a single exe file. MobaXterm integrates several network clients with an X server, and also integrates a full set of Unix based commands.
OpenSSH for Windows
OpenSSH for Windows is a minimal installation of the Cygwin port of OpenSSH and related utilities…
SFTPPlus
Server & client software for managed file transfers.
Win32-OpenSSH
OpenSSH implementation from the Microsoft PowerShell Developer Team

copssh
Copssh is an ssh server and client implementation for windows systems.

vsftpd
Very secure FTP Daemon, a secure, fast FTP server for UNIX systems, including Linux.

zFTPServer Suite
zFTPServer Suite is a user friendly and easy to use FTP server.