Blender

Swiss military tool for 3D modelling. Blender includes several tools for various 3D graphics industries. It's an excellent free 3D design platform that provides a dizzying array of modelling tools and absolutely nothing. You can solve 3D modelling in Blender in many different approaches: using digital shaping, network modelling and parametric modelling.

Blender also offers a range of tools for later stages of production. You can easily use Blender to animate, render, edit videos, or visual effects - which means you only need one tool to expand the scope of your work. 

No better free tool like Blender can be found in 3D modelling. 

Blender is open-source software, which means that the community uses it back, it contributes to improving it and shifting its usability and feature set.