AppleTalk is a suite of protocols developed by Apple Computer for computer networking. The implementation fairly rigorously followed the OSI model of protcol layering.

The LocalTalk implementation based on serial transmission mechanisms was one of the first protocols to allow a number of computers to be networked together with other devices such as printerss. A later implementation called EtherTalk operated over Ethernet.

AppleTalk is now considered clunky and often called 'verbose'. While AppleTalk does work in a Wide area network (WAN) environment, modern Apple computers use TCP-IP by default for networking over a WAN.

Under Mac OS X versions after v10.2, Rendezvous provides many of the features AppleTalk once did.

 
OSI Model Corresponding AppleTalk layers
Application AppleTalk filtering protocol
Presentation ---
Session Zone information protocol
Printer access protocol
Transport Routing table maintenance protocol
Name binding protocol
Network Datagram delivery protocol
AppleTalk resolution protocol
AppleTalk upgrade routing protocol
Data link EtherTalk
LocalTalk
TokenTalk
FDDItalk
Physical IEEE 802.3
IEEE 802.5
FDDI