Compare software

Siemens NXFreeCAD

Best for: High-end CAD, CAM, and CAE suite used in aerospace and automotive design

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

Paid

Commercial enterprise licensing; no free tier.

 Free

Free and open source, funded by donations and sponsorship.

Windows, Linux Windows, macOS, Linux
  • Integrates CAD, CAM, and CAE simulation in one suite for large-scale product design
  • Widely adopted in aerospace and automotive, so it is a common requirement in those industries
  • 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
  • Aimed at large enterprise teams, with pricing and complexity to match
  • Interactive use is Windows-only, with Linux limited to solvers and batch processing
  • 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 22, 2026
Sources

Catalog checked September 20, 2026

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