I want to transform an XSD Document into XML Document(Template), is there any C++ XSLT library?
Xalan might fit (i do not know all the features, but it is a reliable xslt c++ transformation library). Link here.
Outside of Windows I've mostly used Xalan. There is also libxslt, which has C++ bindings, and XQilla, which is built on Apache's Xerces-C library. On Windows, I've used mostly MSXML, but it is based on COM.