WFTPD

WFTPD Server has been a leading FTP server for Windows since it was released in 1993. Its stability and security have long been relied on by technology companies, educational institutions, government departments, individuals and others, to provide a secure FTP site.

Key Benefits
Compliant and compatible - developed by people actively involved in redefining and extending the future standards of FTP through the IETF FTPEXT working group, WFTPD Server is known for its correct support of the FTP standards, and its ability to communicate successfully with a wide range of FTP clients and servers.
Stable and secure - security means more than keeping unwanted people out of your server; it also means providing reliable access to those people you do want in. WFTPD Server is written with both security and stability firmly in mind; no new feature is added without considering how it will affect the security of the whole program.
Simple and powerful - while providing the speed and power youd expect from an FTP server of many times this price, WFTPD Server is also designed to be clear and simple to use; configuration does not require paging through screeds of information with checkboxes for everything including the kitchen sink.