Ikiwiki-syntax is a project mainly written in Vim Script, it's free.
syntax highlighting for ikiwiki files
This is a mirror of http://www.vim.org/scripts/script.php?script_id=3156
This syntax file highlights the wikilinks and directives in IkiWiki files (.mdwn)
Please note that this syntax definition only defines highlighting for directives and wikilinks, not markdown files. To obtain proper highlighting of ikiwiki files (markdown + wikilinks/directives), you must install the Markdown syntax file (vimscript #1242).
You can also use this syntax definition if you use reST, by installing the reST syntax file (vimscript #973), and putting the following in your .vimrc file:
let g:ikiwiki_render_filetype = 'rest'
This step is not required for using markdown files.
This syntax file has a git repository; you can clone it with:
git clone http://git.devnull.li/ikiwiki-syntax.git