Railstab.vim is a project mainly written in Vim Script, it's free.
Retabbing hacks extracted from rails.vim
This is a mirror of http://www.vim.org/scripts/script.php?script_id=2253
This plugin contains the retabbing feature from rails.vim that will be removed in a forthcoming version. I have provided this plugin as a courtesy to anyone actually relying on it and recommend that potential new users stay away.