FastCGI (website archive ) is a language-independent protocol based on CGI. It improves performance (at the cost of isolation) by not creating a new process for every request. It competes with SCGI, which is more popular in Tcl-land.

What FastCGI for Tcl
cvs -z3 -d:pserver:[email protected]:/cvsroot/tcl-fastcgi co -P tcl-fastcgi
Description An C extension for the Tcl interpreter that implement the FastCGI protocol. Works under Windows as well as *nix.
Updated 2013-04-17
Authors Tom Poindexter, Christoph Bauer


RLH 10-18-2006: I read a couple things that indicated there is going to be a push to refine and enhance FastCGI and include it with Apache. The idea is to get away from the mod_<language> and have FastCGI give everyone a robust even playing field. We shall see. Here is a link to the info: [1 ]

ZLM 2008-12-28: Microsoft released FastCGI extensions for IIS 6 and 7. These can be downloaded from .

See also