WS_FTP Pro - Version 9.0 WS_FTP Pro is a Windows-based file transfer client software. It enables all levels of users and organizations to move files between local and remote systems. WS_FTP Pro now supports 128-Bit SSL (Secure Sockets Layer) encryption, the highest commercially available encryption level, to protect your confidential data whensharing over the Internet. When used with a secure server such as WS_FTP Server 3.0, it provides individuals and organizations such as government, education, healthcare, and finance with a highly secure and easy to implement file transfer solution.