An object-orientedconcurrentconstraint language from the University of Saarbrucken.Oz is based on {constraint communication}, a new form of {asynchronous} communication using logic variables.Partial information about the values of variables is imposed concurrently and incrementally. Supports higher order programming and object-orientation including multiple inheritance..["Object-Oriented Concurrent Constraint Programming in Oz", G. Smolka et al].