Raxan PDI (Programmable Document Interface) is an Open Source CSS & PHP application framework that's design to take advantage of modern web application technologies. Features include Client/Server Ajax request and Event Binding, Server-side HTML/XML DOM Traversing and Manipulation, Data Sanitization, Template Binding and Built-in CSRF protection. Check out the website for more information and view the growing number of examples to see what can be done with Raxan PDI.