The purpose of the mod.smalltalk project is to integrate Smalltalk with the Apache Web Server via Fast CGI.

On the page describing Fast CGI, they say:

FastCGI is a fast, open, and secure Web server interface that solves the performance problems inherent in CGI, without introducing the overhead and complexity of proprietary APIs (Application Programming Interfaces).

Excellent tutorials and references.

Oct 26 2009: there may be some activity for running Glade XML with XUL, new link for the Webglade Javascript library.
March 29 2009: moved server-side Javascipt, and added yet more links.
March 27 2009: added Jelix and Jaxer, more links.

See related content about Firefox and server-side Javascript.

March 27 2009: added XML Markup Languages for User Interface. This category neglected ...

Some Cetus links about XML, so far. Most of the Microsoft links are broken.