Using ABNTEX on Max OS X
If you ever want to use ABNT rules on Latex documents, ABNTex is a great resource. ABNT for those who don’t know, is Brazil’s national “ISO”.
My experience using it on a Mac was very straightforward. First, I download and installed MacTeX. It is a huge download, more than 1GB. It may work if you get the smaller versions, but I never tested.
Then, I was as simple as downloading ABNTex and unpacking it on ~/Library/texmf/tex/latex . This directory structure may not exist, so you may need to create the folders after Library.
Done. It worked fine for my monograph latex files.

Thanks, works as expected on Mac SL!