Understanding SolidWorks 2021 and the "SolidSquad" Context SolidWorks 2021 remains one of the most popular versions of Dassault Systèmes’ flagship computer-aided design (CAD) and engineering (CAE) software. When users search for "SolidSquad SolidWorks 2021," they are typically looking for information regarding the legacy releases, activation methods, and compatibility updates associated with this specific version.