FreeCAD is an open-source parametric 3D modeling tool that can be used to design real-life objects. Parametric modeling allows for easy modification of your design by going back to your model history and changing its parameters. FreeCAD allows you sketch constrained geometry 2D shapes and then use them to build other objects. It has many components that allow you to adjust dimensions and extract design details from 3D models. This allows you to create high-quality production-ready drawings. FreeCAD is a multiplatform (Windows, Mac, and Linux) software that can be customized and extended. It can read and write to many open file formats, including STEP, IGES and STL. FreeCAD can be used for a variety of purposes, including product design, mechanical engineering, and architecture. FreeCAD is for everyone, whether you're a programmer, a professional CAD user, or a hobbyist.