TZO uses true dynamic DNS client/server technology to fix a static domain name to a dynamic IP address. This allows Internet users with Cable, DSL, wireless and dialup Internet connections to host their own server, website, FTP server, mail server, game servers, or any other TCP/IP service from a PC at your home or office.
With the so-called free DNS services, you get what you pay for. My site was kicked off one of the free ones for alleged 'abuse'. The abuse? Well, my ISP changed my IP address TOOO often for 'free'. If you're a techie, you want this client instead of the full-featured TZO client. This one just does DNS it has no webserver (I run my own).