InterProcessCommunication such as
	* PipesAndFilters
	* MessagePassing (MailBoxes)
		* SendReceiveReply
		* SendReceiveReplyEventually
		* ActorsModel
		* CommunicatingSequentialProcesses
	* UnixSignal  (software interrupts: very limited communication as it doesn't carry any data)
	* Sockets
	* SharedMemory
	* Files
	* Semaphore / mutex (usually used to coordinate access to SharedMemory)
	* PublishSubscribeModel
	* CommonObjectRequestBrokerArchitecture (CORBA)
	* DistributedCom
	* JavaRemoteMethodInvocation
	* SimpleObjectAccessProtocol / XmlRpc
	* DotNetRemoting
	* MachPorts
* Database querying / OpenDataBaseConnectivity / TableOrientedSynchronization

http://www.nightflight.com/foldoc-bin/foldoc.cgi?query=ipc

----
Some practical ways of doing this include

* DistributedRuby
* MessagePassingInterface (mpi)
* ParallelVirtualMachine (pvm)
* D-BUS
** http://dbus.freedesktop.org/doc/dbus-tutorial.html
----
See also ParallelProgramming ParallelProgrammingModel