NOX

NOX is an open source development platform for C++-based software-defined networking (SDN) control applications. POX, a variant for Python development, is becoming more commonly used than NOX. Older versions of NOX, known collectively as NOX Classic, support both Python and C++ but are no longer actively supported themselves.

The NOXrepo website lists the following NOX features:

• Provides a C++ OpenFlow 1.0 API.
• Provides fast, asynchronous IO.
• Is targeted at recent Linux distributions (particularly Ubuntu 11.10 and 12.04, but also Debian and RHEL 6).
• Includes sample components for:
  • Topology discovery
  • Learning switch
  • Network-wide switch

Nicira Networks developed NOX alongside OpenFlow, and the first OpenFlow SDN controller was based on NOX. In 2008, Nicira turned NOX development over to the open source community.