Onshape Free — The Complete Guide: Free Parametric CAD in the Browser, and the Catch
Onshape is professional parametric CAD software from PTC that runs entirely in the browser — no installation and no powerful computer needed. Its capabilities are close to SolidWorks: sketches, features, assemblies, sheet metal and drawings. The free plan has no time limit.
Onshape (free plan)
PTC
Parametric CAD in the browser with version control. On the free plan every document is public.
Get it from the vendorThe catch: everything is public
On the free plan every document you create is public — anyone can search for it and view it. It therefore suits learning, hobby work and open projects, but not work for a client or a design that must stay confidential. Students and educators have a separate education plan with private documents.
Strengths
- Works on any computer, including Chromebooks and tablets.
- Real-time collaboration, like Google Docs, with full version history.
- An interface that SolidWorks or Fusion users pick up quickly.
- Export to STEP, STL and DWG.
When to choose something else
When the work is confidential, or when you want local files with no cloud dependency, FreeCAD is the full open alternative. For quick, simple models — SolveSpace. For personal non-commercial use there is also Fusion for personal use.
FreeCAD
FreeCAD Project
Open-source parametric 3D modeller with workbenches for solid modelling, FEM, drafting and BIM.
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SolveSpace
SolveSpace Project
Lightweight parametric modeller with a strong constraint solver, for mechanical parts and mechanisms.
Get it from the vendorDune 3D
Dune 3D Project
A new parametric 3D modeller built around constrained sketching.
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Autodesk Fusion (personal use licence)
Autodesk
Cloud CAD/CAM. Free personal licence for non-commercial home projects, with reduced capability.
Get it from the vendorThe bottom line
Onshape Free is an excellent way to learn parametric CAD and work on open projects with no installation. Just remember: whatever you put on the free plan, everyone can see.