AppleTalk
AppleTalk is a LAN system designed and developed by Apple Computer, Inc. It can run over Ethernet, Token Ring, and Fiber Data Distributed Interface (FDDI) networks, and over Apple's proprietary twisted-pair media access system (LocalTalk).
AppleTalk specifies a protocol stack comprising several protocols that direct the flow of traffic over the network. Apple Computer uses the name AppleTalk to refer to the Apple network protocol architecture.