GNUstep has been approved for this year’s Google Summer of Code. The title link goes to the GNUstep wiki page outlining possible projects, but I’m sure that if a student had another idea you’d be welcome to talk about it on the gnustep-discuss mailing list, and probably get a mentor!
OOP the Easy Way
Object-Oriented Programming the Easy Way: a manifesto for reclaiming OOP from three decades of confusion and needless complexity.APPropriate Behaviour
APPosite Concerns
FSF