Ok, I have seen this several places, but I have link it here too: A java program has been written that will read PeopleCode from a PeopleSoft database.
Here are the blogs where I have seen this
PeopleSoft/Oracle Tips (describes how to compile it)
PeopleSoft Pros (I think this is where I first saw it)
It looks like the program was created with information from PeopleCode Secrets.
I would love to create a project on SourceForge for this code. There are so many things that you could do with it. I would love to index the PeopleCode in the system to make searching and refactoring easier. Oh well, maybe one day.