OpenSCAD is a mature, script-based 3D CAD modeler. It provides a declarative language for defining solid geometry through Constructive Solid Geometry (CSG) operations, extrusions, and transformations. The application consists of a C++ core that parses the custom scripting language, builds an AST, and evaluates geometry using either the CGAL or Manifold library for boolean operations. Rendering is handled via OpenGL with both preview (OpenCSG) and final render modes. The GUI, built on Qt, includes a code editor with syntax highlighting, a 3D viewport, parameter customizer, and an integrated AI assistant for code generation. Exports to STL, OBJ, SVG, 3MF, PDF, and other formats. The codebase demonstrates strong engineering with clear module separation (core, geometry, glview, gui, io, utils), extensive regression tests, and reusable patterns such as visitors, builders, and self-contained geometry utilities.
CADAM is a production-grade, open-source web application that converts natural language descriptions into fully parametric 3D CAD models. It operates in two primary modes: parametric (generating OpenSCAD code via an AI agent that can iterate with live previews) and creative (producing 3D meshes via external providers like Meshy and Tripo). The application is built with React 19, TypeScript, TanStack Start, Vite, and Tailwind CSS, with a Supabase backend for authentication, database, and file storage. AI integration spans multiple providers (Anthropic, OpenAI, Google, xAI, and others) via the Vercel AI SDK, and the generated OpenSCAD code is compiled in-browser using a vendored WebAssembly build of OpenSCAD. The system includes a token-based billing model, real-time preview updates, parameter editing, and export to STL, OBJ, GLB, and other formats. Although primarily an application, the benchmarks directory serves as a research record of the quality of generated parametric models, covering complex assemblies like a V8 engine and turbofan.