The CoSMoS project is building generic modelling tools and simulation techniques for complex systems. As part of this project a number of simulations have been developed in many programming languages. This paper describes a framework for interconnecting simulation components written in different programming languages. These simulation components are synchronised and coupled using a shared object space. This approach allows us to combine highly concurrent agent-based simulations written in occam-π, with visualisation and analysis components written in flexible scripting languages such as Python and domain specific languages such as MATLAB.