OK, NERDTree plugin IS great, but this is awesome.

Alloy made custom version of MacVim with file drawer: see https://github.com/alloy/macvim/wiki/Building

It is available in source - so you have to compile it yourselves. But if you do not want to, I did it and the binary is attached, built with these features:

./configure –with-feature=huge –enable-rubyinterp –enable-pythoninterp –enable-perlinterp –enable-cscope

Archive is attached: MacVim.zip

If you want to get my set of plugins and customizations, it is on GitHub: - https://github.com/radegast/dotvim,

Documentation files tells it all:

Here is a screenshot