WBCSIM: A prototype PSE for wood-based composites simulations This chapter describes a computing environment named WBCSim that is intended to increase the productivity of wood scientists conducting research on wood-based composite materials. WBCSim integrates Fortran-based simulation codes with a graphical front end, an optimization tool, and a visualization tool. WBCSim serves as a prototype for the design, construction, and evaluation of larger scale problem solving environments. Several different wood-based composite material simulations are supported. A detailed description of the prototype’s software architecture and a typical scenario of use are presented.