Reo Coordination Language

Reo is a domain-specific language for programming and analyzing coordination protocols that compose individual ''processes'' into full ''systems'', broadly construed. Examples of classes of systems that can be composed with Reo include component-based systems, service-oriented systems, multithreading systems, biological systems, and cryptographic protocols. Reo has a graphical syntax in which every Reo program, called a ''connector'' or ''circuit'', is a labeled directed hypergraph. Such a graph represents the data-flow among the processes in the system. Reo has formal semantics, which stand at the basis of its various formal verification techniques and compilation tools. Provided by Wikipedia