This dissertation discusses a software application development framework. The framework supports developing software applications within the context of Joint Command and Control, which includes interoperability with network-centric systems as well as interoperability with existing legacy systems. The next generation of Command and Control systems are expected to be built on common architectures or enterprise middleware. Enterprise middleware does however not directly address integration with legacy Command and Control systems nor does it address integration with existing and future tactical systems like fighter aircraft. The software framework discussed in this dissertation enables existing legacy systems and tactical systems to interoperate with each other; it enables interoperability with the Command and Control enterprise; and it also enables simulated systems to be deployed within a real environment. The framework does all of this through a unique distributed architecture. The architecture supports both system interoperability and the simulation of systems and equipment within the context of Command and Control. This hybrid approach is the key to the success of the framework. There is a strong focus on the quality of the framework and the current implementation has already been successfully applied within the Command and Control environment. The current framework implementation is also supplied on a DVD with this dissertation. / Dissertation (MEng)--University of Pretoria, 2011. / Electrical, Electronic and Computer Engineering / unrestricted