The control plane is the part of a network that carries signaling traffic and is responsible for routing.
A Distributed Control Plane Architecture (DCPA) is a network architecture that makes it possible to allocate control protocol functions across multiple processor levels in the network system.
NOX is an open source development platform for C++-based software-defined networking (SDN) control applications.
ONOS (Open Network Operating System) is an operating system (OS) designed for network service providers to help build carrier-grade software-defined networks architected for high scalability, availability and performance
POX is an open source development platform for Python-based software-defined networking (SDN) control applications, such as OpenFlow SDN controllers.