2tex.vim is a project mainly written in Vim Script, it's free.
Transform a file into TEX file, using the current syntax highlighting
This is a mirror of http://www.vim.org/scripts/script.php?script_id=947
This script is based on the script 2html.vim. It transforms a file into a TEX file using current highlighting, using the "color" latex package. Sorry, the code is really bad, and this project is not maintained anymore.