Haml.zip is a project mainly written in ..., it's free.
Haml and Sass syntax, indenting, and ftplugin
This is a mirror of http://www.vim.org/scripts/script.php?script_id=1433
Runtime files for Haml and Sass. An older version is included with Vim 7.2. Newest version is on Github:
http://github.com/tpope/vim-haml