OpenWire is a

binary protocol A communication protocol is a system of rules that allows two or more entities of a communications system to transmit information via any kind of variation of a physical quantity. The protocol defines the rules, syntax, semantics and synchroniza ...

designed for working with

message-oriented middleware Message-oriented middleware (MOM) is software or hardware infrastructure supporting sending and receiving messages between distributed systems. MOM allows application modules to be distributed over heterogeneous platforms and reduces the comple ...

. It is the native wire format of ActiveMQ.

External links

ActiveMQ - OpenWire
Message-oriented middleware Network protocols {{compu-network-stub