Lexbor is development of an open source HTML Renderer library
...Lexbor’s code is optimized for ease of access in end-user applications and across programming languages. You can effortlessly wrap all the capabilities of the library in, say, Python to power your end-user or backend applications in a new environment. In other words, lexbor offers a feature-rich core that developers can build upon as they see fit.
PHP driven HTML objects for forming syntatically correct HTML pages. HTMLObjects are designed to be easy to impliment, simple and extensible. Designed for PHP5
No Latte is an interpreter for a variation of the Latte language (cf. http://www.latte.org/) for writing XHTML documents in a functional-programming style---LaTeX sensibilities with LISP semantics.
jsoop (Javascript Object Oriented Programming) is a cross-browser javascript component library targeting Microsoft Internet Explorer and Mozilla. It's inheritance tree includes basic HTML components, alignment, serialization, fieldbinding, xml, xmlhttp