This Homebrew tap provides homebrew formulae for various tools I've found useful.
First, install homebrew:
ruby -e "$(curl -fsSL https://raw.github.com/Homebrew/homebrew/go/install)"
Then tap this repository:
brew tap hugovincent/homebrew-formulae
NOTE: if you are using Github 2-factor Auth, you have to use an OAuth token as your password if prompted at the command line during login to Github by Homebrew. Create a token at https://github.com/settings/applications under Personal Access Tokens.
Then you can brew install <things>
from this tap.