LayManSys - Layout Management System - is a PHP framework, that helps you providing a consistent look&feel of your web pages. It stores the meta information about the documents in RDF files and uses them for generating the HTML frame (<head> and footer).
GateRoom is a real MVC framework. The only one which also thrives to divide between server code and client code completly. Those creating a loose framwork (or collection of tools) to create web sites and web application with the newest of techs available.
Valid CGI Values is (currently) a XHTML forms based technologie for validating CGI values submitted by these forms. It consists of a form parser that analyzes web forms and a package with validation functions.