CGI is an abbreviation for Common Gateway Interface.  http://www.w3c.org/ is one body which proposes and approves standards for internet applications - see [[quote reference]] for CGI related standards.

[Benny Riefenstahl]: See the Apache FAQ: "Where can I find the 'CGI specification'?"
[http://httpd.apache.org/docs/misc/FAQ-F.html#cgi-spec].

In Tcl, [ncgi] is a module in [tcllib] that deals with CGI.  Another useful package is [Don Libes]'s [cgi.tcl extension].  ncgi, along with [html]-[htmlparse], and later [javascript], essentially factors cgi.tcl, while introducing namespace amenities.

[[List other useful references - perhaps like Apache's mod_dtcl, etc.]

----
[[I should make a point of explaining clearly that there are several
distinct approaches to CGI coding with Tcl, including:

   * [ncgi]
   * cgi.tcl (see [cgi.tcl extension])
   * JM Ivler's book [BOOK CGI Developer's Resource - Web Programming in Tcl and Perl] 
   * http://cui.unige.ch/eao/www/prod/http-query-setup.txt
   * "by hand", described in "[Writing simple CGI applications using vanilla Tcl]" and "[Using Tcl to write CGI applications]"
   * "[Wikit under CGI]"
   * cgilib.tcl from Brent Welch's [BOOK Practical Programming in Tcl and Tk, Third edition].  ncgi is descended from and largely supersedes cgilib.
   * [websh] can be used in CGI mode for Apache 1.3 and 2.0
   * [cgi by hand]
   * [Playing CGI]
   * [cgibitch]

----


[FastCGI] is also likely to be of interest.

----
To the extent that CGI is used in the casual sense of "dynamically generated web pages, or forms handling, or [Web application]", there is also [AOLServer], with its built-in TCL interpreter and database hooks, and [nstcl], which is a TCL-only extension which has AOLServer's API to http queries and database handling, as well as a templating library.

As is [Apache Tcl] and [Rivet].

[Tclhttpd] supports dynamically generated content, and also optionally implements the vanilla CGI API as one of its [Tclhttpd Domains].
----
[Category Acronym] |
[Category Internet]