FlexSim 2019 version 19.0.0 Enterprise FlexSim 2019 version 19.0.0 Enterprise | 1.2 Gb FlexSim Software Products, Inc. is pleased to announce the availability of FlexSim 2019 (version 19.0.0), is 3D simulation software designed for modeling processes. Processes include manufacturing, packaging, warehousing, material handling, supply-chain, and many others.