SolidWorks is a 3D mechanical CAD software package. It is a parasolid-based solid modeler, and utilizes a parametric feature-based approach to create models and assemblies.

SolidWorks produces 3 primary file types:

• Parts (.sldprt)
• Assemblies (.sldasm)
• Drawings (.slddrw)

SolidWorks as a core software integrates numerous other software "add-ons" which increase functionality.