Youpee is an html preprocessor that allows to embed any code of any script language as well as calling any external program to generate text files. It is specially designed to work with html/xml documents and provide traditional features such as define, include, macro, conditional tests, loop.

the url is http://youpee.salemioche .com

Youpee is now quite usable and I personaly use it for all of my web sites, I'll be glad to talk with people who are interested in this subject or would like to test/contribute