Abstract11.1 Chapter-Specific Terminology11.2 Open Source Licensing Issues11.3 Profiles of SDN Open Source Users11.4 OpenFlow Source Code11.5 Switch Implementations11.6 Controller Implementations11.7 SDN Applications11.8 Orchestration and Network Virtualization11.9 Simulation, Testing, and Tools11.10 OpenStack11.11 Example: Applying SDN Open Source11.12 ConclusionReferences