Computer Modelling Group Ltd., abbreviated as CMG, is a software company that produces reservoir simulation software for the oil and gas industry. This release is the official 2021 General Release of CMG software. The products within the General Release contain many new features and bug fixes. The release contains the 2021.10 version of the following products: Builder, cEDIT, Cloud, CMOST AI, DataImporter, GEM, IMEX, Launcher, Report, Results, STARS, WinProp.