 Examples include IBM's System Object Model (SOM/DSOM), Sun Microsystems' Distributed Objects Everywhere (DOE), NeXT's Portable Distributed Objects (PDO), Digital's ObjectBroker, Microsoft's Component Object Model (COM/DCOM), and any number of CORBA-based systems.After the inevitable cooling of marketing hype, object libraries continue to be used in both object-oriented programming and distributed information systems.Class libraries are the rough OOP equivalent of older types of code libraries.