Gul 2.0 is a powerfull and free Xul parser/interpreter library for Phpgtk 2 written in php. Gul supports PHP and basic CSS features into Xul. Gulpad example provides a split screen where the Xul code can be typed and immediately previewed.
Template Parser Engine is a Project for developer that helps to create automaticly different fileformats.
All that developer have to do is to set special tags into Teplates and TPE creates aautomaticly dynamic code, convert pictures and send e-mail.