FreeCAD is a free computer-aided design (CAD) software that offers a comprehensive suite of features comparable to expensive alternatives. It has a parametric modeling engine that allows users to make seamless adjustments to design parameters, ensuring changes are automatically reflected throughout the design. The software includes multiple workbenches for different design phases, such as the Sketcher for 2D geometry and the Part and Design workbenches for solid modeling. FreeCAD also features Computer Numerical Control (CNC) capabilities for converting 3D models into G-code and provides Finite Element Analysis (FEA) tools for stress testing designs. Advanced users can utilize Python scripting for automation and customize their experience with industry-specific plugins. FreeCAD supports various file formats, including STEP, IGES, STL, SVG, DXF, OBJ, IFC, and DAE.