zFTPServer Suite is described as 'user friendly and easy to use FTP server. It offers all the standard FTP features, as well as support for SSL/TLS, transfer limits, real-time monitoring, virtual directories, and user groups' and is a FTP Server in the File Sharing category. There are more than 25 alternatives to zFTPServer Suite for a variety of platforms, including Windows, Linux, Mac, BSD and Self-Hosted solutions. The best alternative is OpenSSH, which is both free and Open Source. Other great apps like zFTPServer Suite are FileZilla Server (Free, Open Source), Mosh (Free, Open Source), vsftpd (Free, Open Source) and ProFTPD (Free, Open Source).
OpenSSH is a free version of the SSH connectivity tools that technical users rely on. OpenSSH encrypts all traffic (including passwords) to effectively eliminate eavesdropping, connection hijacking, and other attacks.
Mosh (mobile shell), the mobile SSH replacement. Remote terminal application that allows roaming, supports intermittent connectivity, and provides intelligent local echo and line editing of user keystrokes.
WinSSHD is our SSH server for all Windows NT-series operating systems. Supported platforms include Windows 2000, XP, 2003, Vista, 2008, and 7. Both 32-bit and 64-bit versions of Windows are supported. Even Windows NT4 is still supported by WinSSHD 4.
Syncplify.me Server! is the free FTP, FTPS, and SFTP server for Windows by Syncplify, Inc. Powerful, secure, yet very easy to configure, this software simplifies regulatory compliance and operation of a secure file transfer server.