CAD
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FreeCAD is a general purpose feature-based, parametric 3D modeler for CAD , MCAD, CAx , CAE and PLM , aimed directly at mechanical engineering and product design but also fits a wider range of uses in engineering, such as architecture or other engineering specialties. It is 100% Open Source and extremely modular, allowing for very advanced extension and customization. FreeCAD is based on OpenCasCade , a powerful geometry kernel, features an Open Inventor -compliant 3D scene representation model provided by the Coin 3D library, and a broad Python API. The interface is built with Qt .
free-cad
After a few month release hiatus, BRL-CAD 7.20.4 is now available providing several dozen bug fixes and feature enhancements. Our support for NURBS geometry continues to stabilize with improved step-g import support, ray tracing enhancements, better wireframes, and numerous robustness improvements. MGED/Archer continues to approach an alpha release with support added for interactive editing of pipe primitives, improved visualization, new BoT mesh healing capabilities, and more.
