AbstractThe needs for automated assistance in the simulation task are undeniable. The size and complexity of current modelling efforts far exceed the bounds considered challenging only a decade ago. A research prototype of a simulation model development environment (SMDE) has been developed to provide an integrated and comprehensive collection of computer-based tools to (1) offer cost-effective, integrated and automated support of model development throughout its entire life cycle, (2) improve the model quality by effectively assisting in the quality assurance of the model, (3) significantly increase the efficiency and productivity of the project team, and (4) substantially decrease the model development time. The prototype SMDE is composed of four layers: (0) hardware and operating system, (1) kernel SMDE, (2) minimal SMDE, and (3) SMDEs. Currently, a SUN 3/160 colour computer workstation and the UNIX operating system constitute layer 0, upon which an advanced prototype SMDE is being developed. The objectives of this paper are to: (1) describe the current state of research on simulation support environments; (2) use the SMDE research prototype as an example for describing concepts and principles employed, experiences gained, and guidelines (potential principles) derived in the design and creation of the prototype; and (3) identify and speculate on future research directions.