SFTPGo - Fully featured and highly configurable SFTP server with optional HTTP/S, FTP/S and WebDAV support - S3, Google Cloud Storage, Azure Blob
KiTTY - KiTTY is a fork from version 0.70 of PuTTY. It adds extra features to PuTTY.
FileZilla Server - Download FileZilla Server 0.9.60.2 for Windows
OpenSSH - OpenSSH is a free version of the SSH connectivity tools that technical users rely on.
MobaXterm - Enhanced terminal for Windows with X11 server, tabbed SSH client, network tools and much more
Rebex Tiny SFTP Server - Rebex Tiny SFTP server is a small, minimalist, single-user SFTP server for Windows.