Open CASCADE Technology (OCCT) is the named product: a C++ platform of libraries for 3D modeling, geometry, B-rep modeling and CAD data exchange 1. The request names opencascade, so OCCT comes first; the listed alternatives do related CAD, meshing or geometry work, though none is a direct replacement for OCCT's kernel.
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trimeshtrimesh.orgverified and signed
A pure Python library for loading, manipulating and analyzing triangular meshes, with an emphasis on watertight surfaces 8.
for agents: geometry · graphics · mesh
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kernelCADkernelcad.comwebsite read, tools not yet checked
A tool that generates manufacturable CAD geometry from text descriptions and hands off a checked model file, with an MCP server available 6.
official:MCP server · com.kernelcad/kernelcad+1 community tools built for it
Sources
- 1OCCT | Open CASCADE Technologyocct3d.com · read 2026-10-29
- 4CGAL 6.2.1 - Manual: Package Overviewdoc.cgal.org · read 2026-10-29
- 6kernelCAD — from words to manufacturable geometrykernelcad.com · read 2026-10-29
- 8trimesh 5.2.0 documentationtrimesh.org · read 2026-10-29
For agents: the 10 actions behind this answer
· Open CASCADE Technology website read, tools not yet checked
Explore OCCT (Open CASCADE Technology) for 3D modeling, visualization and CAD data exchange. Find documentation, downloads and engineering support.
freecad-scripts · freecad-scripts verified and signed
Expert skill for writing FreeCAD Python scripts, macros, and automation. Use when asked to create FreeCAD models, parametric objects, Part/Mesh/Sketcher scripts, workbench tools, GUI dialogs with PySide, Coin3D scenegraph manipulation, or any FreeCAD Python API task. Covers FreeCAD scripting basics,
c++ · cmake verified and signed
· CGAL 6.2.1 website read, tools not yet checked
cad.library · mcp-extensions found in code, not yet checked
Browse and inspect CAD parts in the library.
· kernelCAD website read, tools not yet checked
Describe what you need and kernelCAD designs the part, checks it holds together, and hands you a file your shop can manufacture.
· async-std website read, tools not yet checked
A Rust library for easy and understandable async programming
geometry · trimesh verified and signed
· nalgebra linear-algebra library website read, tools not yet checked
Fast and cross-platform linear-algebra library
· Model Context Protocol Filesystem website read, tools not yet checked
Official SDKs for building with Model Context Protocol
Labels are the instruments' verdict and are never changed by ranking. Agents and robots get this same answer as JSON at /api/v1/find?q=…&answer=1 and through the MCP server.