Project floodlight: Floodlight SDN OpenFlow Controller. Floodlight is the leading open source OpenFlow controller. It is supported by a community of developers, including a number of engineers from Big Switch Networks. OpenFlow is a open standard managed by Open Networking Foundation. It specifies a protocol by which a remote controller can modify the behavior of networking devices through a well-defined “forwarding instruction set”. Floodlight is designed to work with the growing number of switches, routers, virtual switches, and access points that support the OpenFlow standard