PolyORB is a polymorphic infrastructure for building distributed systems

PolyORB is a polymorphic, reusable infrastructure for building or prototyping
new middleware adapted to specific application needs. It provides a set of
components on top of which various instances can be elaborated. These instances
(or personalities) are views on PolyORB facilities that are compliant to
existing standards, either at the API level (application personality) or at the
protocol level (protocol personality).