FreeCAD - An open-source parametric 3D modeler
AutoTURN - AutoTURN is used to confidently analyze road and site design projects including intersections, roundabouts, bus terminals, loading bays, parking lots or any on/off-street assignments involving vehicle access checks, clearances, and swept path maneuv…
Blender - Blender is the open source, cross platform suite of tools for 3D creation.
AutoCAD MEP - AutoCAD MEP software helps you draft, design, and document building systems.
Onshape - Onshape is the first full-cloud 3D CAD system. It runs in a web browser and on any mobile device.
MicroStation - 3D CAD modelling software for architecture and engineering.