Github has modules produced by statianzo, vim-scripts, and digitaltoad. None of the three are related by forking
And google finds this:
http://www.vim.org/scripts/script.php?script_id=3192
Which one is best?
Copying from below (vote those guys up if you find their info useful):
vim.org == vim-scripts - this is the original module
... after some edits and extensions (more syntax highlighting cases from what I can tell) the code evolves into ...
digitaltoad - most popular
statianzo - similar looking features to digitaltoad, fewer followers
Right now, I'm going with the digitaltoad module.