Subject tells everything. The home site of homebrew is here.
Here’s the method how to install:
Paste this at a shell prompt:
/usr/bin/ruby -e "$(curl -fsSL https://raw.github.com/gist/323731)"
(Make sure to run this inside a stand-alone terminal, not something like Emacs Shell.)
With homebrew, install new package in MacOS is extrmely easy, installing “node.js”, for an example, just needs the following command:
$ brew install node
More information about how to use homebrew, you can run “brew –help” to get the details.