gPROMS ProcessBuilder is a next-generation Advanced Process Modelling environment for optimising the design and operation of process plants. ProcessBuilder combines industry-leading steady-state and dynamic models with all the power of the gPROMS equation-oriented modelling, analysis and optimisation platform in an easy-to-use process flowsheeting environment. It is transforming the way the process industries design and operate by unlocking new value and competitive advantage in ‘already optimised’ processes.