Every built piece, one click away — the real computational cores under CAD / numerics / CAE, each checked against a closed-form answer, not pretty pictures that pretend. Browser tools plus a drop-in Python core for your stack.
What is real, stated plainly. Everything linked above is built and working, and the math is checked — not decorative. The CAE engine's truss FEA and heat solver hit their closed-form benchmarks (−707.11 N, 25.0°); the Python core self-tests 8/8 PASS; the workbench computes exact geometry plus closed-form analysis; plates 1–3 compute from named correlations with sourced datums. What is not here, honestly: a true B-rep modeling kernel, parametric history, and coupled multiphysics — person-years each, and the substrate above is exactly what they plug into. Planned plates (tokamak, heat exchanger, dilution fridge) are scaffolded in the hub, not yet built. The workbench link points to the line-verified ++++1 build; the newer +5/+6 share the same solver core.