CGI stands for Common Gateway Interface and is the means by which browsers (Internet Explorer, Firefox, Netscape, Opera etc) can communicate with the servers (the computers that make web pages available on the web).

One of the most famous CGI Scripts is Matt Wright's Formmail script which is usually used to send the contents of a enquiry form as an email, CGI Scripts can also be used for Auctions, Calculators, Calendars, Chat sites, Classified Ads, Content Management, Counters, Database Tools, Discussion Boards, E-Commerce, Form Processors, Games, Guestbooks, Image Manipulation, Password Protection, Polls and Voting, Postcards, Security, Site Mapping, Web Traffic Analysis and much, much more.

"We are not happy until you are  happy"