IDX-DocBook2LaTeX is a stylesheet which translates DocBook documents into LaTeX. It is written in Perl, using the XML::XPathScript package from AxKit. It features the ability to handle tables, indices, figures, footnotes, and more. The XSLT-like templating philosophy built into XPathScript makes it easy to extend.
deplate converts wiki-like markup to LaTeX (standard classes, koma, dramatist, sweave), HTML/PHP (single page, chunked/website, HTML, or s5-based slideshow), DocBook (article, book, man/ref page), and really plain text. Currently supported input formats are viki and Ruby's rdoc. The viki markup supports footnotes, citations, index, table of contents, embedded LaTeX for mathematics, integration with R for dynamically generated figures and tables, and more. Output can be customized via page templates.