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DesignSpark MechanicalFreeCAD

Best for: Engineers and makers who need quick 3D models and edits without a full parametric CAD package

Best for: Designing parts you intend to machine or 3D print

Free + paid options

A free Explorer plan is available, with paid Creator and Engineer plans adding more tools.

 Free

Free and open source, funded by donations and sponsorship.

Windows Windows, macOS, Linux
  • Push-pull direct modelling that suits non-specialists
  • Imports and exports STEP, IGES, STL and DXF
All 3 strengths
  • Push-pull direct modelling that suits non-specialists
  • Imports and exports STEP, IGES, STL and DXF
  • Free plan with no project limit
  • Parametric: change a dimension and the model updates through its history
  • Sketch constrained 2D geometry and build 3D objects on top of it
All 5 strengths
  • Parametric: change a dimension and the model updates through its history
  • Sketch constrained 2D geometry and build 3D objects on top of it
  • Produces dimensioned production drawings from the 3D model
  • Separate workbenches for product design, mechanical engineering, architecture, FEM and CAM
  • Broad Python API for scripting and custom tools
  • Assembly tools require the paid Engineer plan
  • Some import and export features depend on the plan
  • Workbenches vary a lot in polish and consistency
  • CAD concepts plus FreeCAD’s own conventions make for a long learning curve
All 3 limitations
  • Workbenches vary a lot in polish and consistency
  • CAD concepts plus FreeCAD’s own conventions make for a long learning curve
  • Large or complex assemblies can be slow
Downloadable app Downloadable app
Not open source Open source
License not stated License: LGPL-2.1
Not stated if an account is needed No account needed
Not stated if it works offline Offline features available
Sources

Catalog checked September 24, 2026
Sources

Catalog checked September 20, 2026

“Not stated” means we have not confirmed it. Features can vary by device and plan.