This is partly for documenting what we've done, partly to make sure the PMs can cover licence stuff, and partly so we can credit the providers for the boost their tools have given us.
So far I have:
Skeleton (CSS framework)
bibs - https://github.com/reklaklislaw/bibs
nltk - http://nltk.org/
See the requirements.txt (https://github.com/chnm/petulant-adventure/blob/master/requirements.txt) as well as the list in the wiki (https://github.com/chnm/petulant-adventure/wiki)
Meghan, close this one if it's just duplicating the other you'd started.