Rhinoceros

Rhino can create, edit, analyze, document, render, animate, and translate NURBS curves, surfaces and solids, subdivision geometry (SubD), point clouds, and polygon meshes. There are no limits on complexity, degree, or size beyond those of your hardware.

Special features include:

Uninhibited free-form 3D modeling tools like those found only in products costing 20 to 50 times more. Model any shape you can imagine.
Accuracy needed to design, prototype, engineer, analyze, and manufacture anything from an airplane to jewelry.
Compatibility with all your other design, drafting, CAM, engineering, analysis, rendering, animation, and illustration software.
Read and repair meshes and extremely challenging IGES files.
Accessible. So easy to learn and use that you can focus on design and visualization without being distracted by the software.
Fast, even on an ordinary laptop computer. No special hardware is needed.
Development platform for hundreds of specialty 3D products.
Affordable. Ordinary hardware. Short learning curve. Affordable purchase price. No maintenance fees.
Cross-Platform: The world’s most versatile 3D modeler, available on Windows and macOS.