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Although space mapping is a powerful optimization and modeling methodology, it is not always straightforward to implement, especially if one wants to use some advanced techniques and employ commercial simulators in the automatic optimization loop. The SMF system is a user-friendly space mapping software that is designed to make space mapping accessible to engineers inexperienced in this technology. SMF allows automatic or interactive space-mapping-based constrained optimization, modeling and statistical analysis. It incorporates most of the existing space mapping techniques including input, output, implicit, and frequency space mapping as well as the latest developments such as space-mapping based interpolation and advanced modeling techniques. SMF provides sockets to popular EM/circuit simulators including Sonnet em, MEFiSTo, ADS, and FEKO. In this paper we give a brief introduction to space mapping methodology as well as an exposition of the SMF system with special focus on its optimization interfaces. An SMF application example is given.