Software modules that are designed to work together but reside in multiple computer systems throughout the organization. A program in one machine sends a message to an object in a remote machine to perform some processing. The results are sent back to the calling machine.
Distributed objects are used in Java RMI.
CORBA lets us build distributed mixed object systems.
DCOM is a framework for distributed objects on Microsoft platform.
DDObjects is a framework for distributed objects using Borland Delphi.
Pyro is a framework for distributed objects using Python programming language.
dRuby is a framework for distributed objects using Ruby programming language.