| Feature | Free | Professional | Enterprise | 
                  
                    | User Accounts | 10 | Unlimited | Unlimited | 
                  
                    | Simultaneous Connections | 10 | 100 | Unlimited | 
                  
                    | Active Directory Authentication |   | Local Only | Local and Remote | 
                  
                    | Integrated NT user accounts authentication (without importing) |   | Local Authentication | Local & Remote Authentication | 
                  
                    | NT User Security Impersonation |   |   |   | 
                  
                    | Secure Socket Layer3 (SSL & TLS) |   |   |   | 
                  
                    | Anti-hammer & Auto-ban support |   |   |   | 
                  
                    | Restrict users based on domain or ip addresses |   |   |   | 
                  
                    | Bandwidth caps (server or individual account) |   |   |   | 
                  
                    | Ratios and Quotas (session quota or disk quota) |   |   |   | 
                  
                    | Remote admin support (live statistics and spy on users from remote machines) |   |   |   | 
                  
                    | Customize server name, site closed message, connect message |   |   |   | 
                  
                    | Set server execution priority |   |   |   | 
                  
                    | User account expiration |   |   |   | 
                  
                    | Import NT user accounts from local or remote machines |   |   |   | 
                  
                    | Create NT user accounts from FTP accounts |   |   |   | 
                  
                    | Runs as NT Service |   |   |   | 
                  
                    | Automatic Date and Time Activation |   |   |   | 
                  
                    | Set Default Folder Permissions |   |   |   | 
                  
                    | Configure for firewall/router/nat operations |   |   |   | 
                  
                    | Listen on all or specific ip addresses |   |   |   | 
                  
                    | Unlimited scripts execution. vbscript, perlscript, jscript and pythonscript |   |   |   | 
                  
                    | Realtime server statistics (GUI and external activex control) |   |   |   | 
                  
                    | 3D Graphical Server History |   |   |   | 
                  
                    | Root, virtual and merge folder support |   |   |   | 
                  
                    | Anti-idle, owner-create, custom user listen port, login message support |   |   |   | 
                  
                    | site commands, account comments, file blocking, account history |   |   |   |