PIMF (Php Is My Framework) is a micro framework for PHP that emphasises minimalism and simplicity. It is based on proven design patterns and a fast object relational mapping mechanism, and is designed to be easily updated without having to rewrite your projects. It includes mechanisms for easily coupling controllers to ExtJs and Dojo.
phpHackerPortal is a portal site with dynamic Web pages for hackers, including programmers, artists, and designers. It features a movie database with with pictures, widgets, groups of users, notebook, pixel art and animations of 8x8 images, a Scheme and C interpreter, utilities, and many libraries with PHP routines, CSS, and lots more.