Software
Purpose-built tools for CAD, simulation and testing — free to use, no login required.
RetroCAD3DBETA
A full parametric 3D CAD tool that runs entirely in the browser — sketch, extrude and fillet real solid geometry, with a proper feature tree. No installs, no licences.
- ✓Sketch on any work plane or solid face
- ✓Extrude, cut out and fillet real 3D solids
- ✓Full feature tree — edit and reorder past steps
- ✓Runs entirely in the browser, powered by a real CAD kernel (OpenCascade)
2D Retro CAD
A fully functioning vector 2D CAD platform for laser cutting, orthogonal planning, vectorising images and more.
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Boat Stability Software
Calculate the stability of a hull cross-section — design it, test it, and see the righting moment.
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Combat Bot CAM Lifter
Design and simulate the cam mechanism used for a combat bot's lifting arm.
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Earthquake Tower Simulation
Simulate an earthquake and see its effects on a truss tower structure.
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Rover Simulator
Design and simulate a rover's rocker-bogie suspension system.
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Downforce Calculator
Design a rear wing for a model car and calculate downforce and drag.
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Box Lid Creator
Generate laser-cut box lids from simple measurements, with an adjustable diagonal slider and DXF export.
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FDM Mechanical Property Predictor
Predict the mechanical properties of a 3D-printed part based on material and print settings.
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Four-Bar Wing Linkage Designer
Design a parallel four-bar linkage for an actuated wing, with servo and Newtonian impact-aero modelling.
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Wing Impact Model
A Newtonian flat-plate physics model showing the impact forces acting on a wing.
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