FreeCAD

FreeCAD delivers a versatile 3D CAD modeling experience accessible to beginners and experts alike. This portable application requires no installation and runs directly from a USB drive. It is packed with handy options for sketching, part design, assembly, and rendering. Users benefit from a fully parametric workflow, allowing modifications at any stage of the design process. With support for various file formats and an active community, FreeCAD is a powerful, free alternative for engineering, product design, and 3D printing projects.