These formulæ provide software providing Natural Language Processing (NLP) capabilities developed by the DELPH-IN consortium. These NLP packages provide various tools to assist in HPSG driven natural language parsing and generation. See this page for a list of applications of these tools.
How do I install these formulae?
brew install delph-in/delphin/<formula>
Or brew tap delph-in/delphin and then brew install <formula>.