Efficient UDP unicast, UDP multicast, and IPC message transport
High Performance data structures and utility methods for Java
High performance inter-thread messaging library
OpenDDS is open source publish/subscribe middleware
Publish/Subscribe, Request/Reply Messaging API for Java.
Middleware for distributed applications
Controlling Model Railroad via Networks
Asterix UDP multicast recorder
A multi-platform group communication framework for smartphones
Flash Media Server
IP Multicast Reliable Publish - Subscribe API (Java and Linux C++)
Library for crossplattform communication