Homebrew Terminal is set of Homebrew Formulas designed for terminal (command-line) usage.
Because of Homebrew's acceptance policy, these Formula may not be included in the primary repository until "well known" or "widely used".
brew tap karlkfi/homebrew-terminal
brew install <formula>
Or install via URL (which will not receive updates):
brew install https://raw.githubusercontent.com/karlkfi/homebrew-terminal/master/<formula>.rb
brew help, man brew or check Homebrew's documentation.