Agent Communication: Needs and solutions - The Web Developer's Journal: This article presents an overview of the need for agent communication, and possible solutions.
J.Agentx: A portable, lightweight implementation of the AgentX protocol for SNMP Agent Extensibility. This Java-based package was developed at the University of Coimbra, Portugal. [Freeware]
UMBC KQML: Information and resources for the Knowledge Query Manipulation Language (KQML)