PHP web-application framework including MVC, GUI, ORM, FSM, ACL, Ajax and many more. Very useful toolset to build php web-applications from the simpliest to more complex systems. See www.mywebframe.com for more details!
PHPOP, or POP for short, is an open source web application framework for fast and efficient scripting and serving of your websites and Internet applications.
core|m is a rapid PHP web-development framework for your daily web-application needs. It is not aimed to replace existing content management systems. It will be a tool for PHP-Programmers to ease their work. Please see the wiki for documentation.
Web Application Structure for PHP - A powerful multi-tier MVC web application framework built on Object Oriented PHP5. Uses PEAR DB_DataObjects and Html_Template_Flexy.
The Today Web Framework, or "Today", is a toolkit for building web sites and for managing the content of those sites. It is similar to PHPNuke or Slashcode in terms of what it does, but is written from scratch to meetdifferent needs.