List of programmatic 3D modelling tools

Up: Constructive solid geometry

Code: DSL libraries for CSG, CSG software, ...

• B-Rep – OpenSCAD – OpenSCADs website – (uses CGAL under the hood – C/C++)
  

Interestingly OpenSCAD ...

• ... is a 100% pure/denotative/side-effect-free by design. But as of 2021 it ...
• ... is not a higher order functional language with functions as "first class citizens".

There are quite a few copycat projects of OpenSCAD around.
Unfortunately they all seem to fail to implement a hard guarantee on code purity – (inheriting impurity from their substrate language).
Beyond OpenSCAD of the software artifacts listed here only implicitcad can give hard guarantees on purity (there enforced by types).
Related: Relations of APM to purely functional programming

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• B-Rep – csg.js – (javascript library)
• F-Rep – libfive (formerly AO) (on github) — (guile scheme software)
• F-Rep – Foglemans SDF library — (python library)
• F-Rep – implicitcad – (haskell DSL)
• F-Rep – MiniSageCAD experiment on Thingiverse (implemented in the sage computer algebra system)

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• F-Rep (2D) – rendering engine of the enso programming language (rust library)
• F-Rep SDF-code on shadertoy – many examples there
  – Raymarching - Primitives ~ by iq
  – shadertoy: tag=sdf

Misc

• CGAL (C++) (landing page) (wikipedia)
• OpenCASCADE (B-Rep, C++) (wikipedia)
• JSCAD (github)
• BRL-CAD (C++, CSG) (landing page) (wikipedia)