This is the software publisher’s description.

Gene6 FTP Server is an advanced FTP server developed specifically for security and high performance requirements. Gene6 FTP Server is a professional Windows FTP server featuring speed, reliability and customisation. Its main assets are remote administration, encrypted (SSL 128 bits) connection, and ease of use. Its fast performance enable it to run heavily loaded files servers worldwide but this does not price it out of the range of smaller companies who will find a customisable, trustworthy and easy-to-administer FTP server at an affordable price.

Gene6 FTP Server Professional is the ultimate version and has been developed for demanding business and corporate use. With SSL support it can be used to transfer important files over internet with security like medical information and sensitive data.

Strong security and high performances are the heart of Gene6 FTP Server which is already powering thousands of servers worldwide in home, small, medium or fortune 500 companies.

Note that the Standard edition is limited to only 2 domains and 25 concurrent connected FTP users.