check Editions Comparison For Wing FTP Server:

  Free Edition Standard Edition Secure Edition Corporate Edition
Web Client (HTTP)
Web based administration
iOS & Android App
Max domain number Unlimited Unlimited Unlimited Unlimited
Max user accounts per domain 10 100 200 Unlimited
Max concurrent connections per domain 10 100 200 Unlimited
Virtual directory mapping
Transfer ratios and quotas
Audit & Report
Lifetime technical support  
Weblink & upload link  
FTPS (Secure FTP over SSL)    
HTTPS (Web Client over SSL)    
SFTP over SSH2    
Store users via ODBC database      
Store users via Mysql database      
Events manager      
Task scheduler      
Windows Authentication      
LDAP Authentication