Spoon is a PHP5 library that focuses on speed, both in page execution and coding agility. Because of its clear and logical structure, it offers a very small learning curve for both the experienced and not-so-experienced developer. Spoon provides a well documented library with a large collection of classes that you can use while building Web applications.
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.