You can download an older version of the framework here:
Not the code is small so it should not be difficult to get an overview of the code and understand it.
PDOFactory in chapter 7
thread for further information. There are similar Python frameworsk like Django. I think that you get synergi effects by knowing Python / Django, since object relational mapping (ORM) is central in both Django and Ulyssis. It seems that there is no development on Ulysses, but if you understand it, you should be able to develop it further yourself. For more information see my forum http://www.oopschool.com/phpBB3/
that is closed for posting by members because of spam.