libfive is a software library and set of tools for solid modeling, especially suited for parametric and procedural design. It is infrastructure for generative design, mass customization, and domain-specific CAD tools.
- Here are links for Linux downloads
- Silo is a focused and lightning-fast standalone 3D modeler. Its deep modeling and UV mapping toolset has made it a favorite of pros for making game assets, movie characters, and objects for 3D printing.