.fcstd file: how to open it on Windows

2 Windows apps register the .fcstd extension. Install one of them to open the file with a double-click.

• 
  FreeCAD

  A general purpose open source parametric 3D CAD modeler

  Open source 1.1.4 ★ 34.6K
• 
  FreeCAD

  A general purpose open source parametric 3D CAD modeler. Weekly build.

  Open source 2026.10.07 ★ 34.6K

Related guide: Change the default app for a file type in Windows