ORB : Java Glossary


An ORB (Object Request Broker) that more or less conforms to CORBA (Common Object Request Broker Architecture). That rules out Microsoft’s OLE (Object Linking & Embedding) and to a lesser extent Java’s RMI (Remote Method Invocation) and IBM (International Business Machines) ’s SOM (Start Of Message). An ORB is not proprietary. CORBA is freely available with no fee and is entirely vendor-neutral.

There are now at least a couple of dozen proprietary and 40 or so free or open source ORBs (Object Request Brokers) available, not far off 100 in total and more all the time (though lots of old ones like ORB-Plus, NEO, Joe, HardPack, ObjectBroker, etc. have also disappeared). IBM ’s SOM was retired a few years back. IBM ’s new ORB is ComponentBroker.

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