Experimenters in GENI have used OpenFlow controllers based on these frameworks (in alphabetical order):

• ​Beacon Beacon is a java-based controller built by David Erickson at Stanford.
• ​FloodLight FoodLight is a java-based controller that was forked from the Beacon controller, and now is supported by a community of developers.
• ​Maestro Maestro is a multi-threaded java-based controller that was developed at Rice University.
• ​NOX Nox is a C++ based controller that gives the ability to developers to write new controllers in either C++ or python. Nox was developed at Stanford University.
• ​Trema Trema is a C based controller that gives the aability to developers to write new controllers in either C or Ruby. Trema was developed by NEC.

You can find a performance comparison for some of the controllers ​here

If you're a GENI experimenter using an OpenFlow controller based on something else, drop a note to ​help@geni.net, and we can add a link here.