FreeCAD

Free, open-source parametric 3D CAD.

About FreeCAD

In FreeCAD’s own words: “FreeCAD, the open source 3D parametric modeler”

FreeCAD is open source and is free to use.

People switching from AutoCAD often consider FreeCAD.

FreeCAD is an alternative to

AutoCADSee all AutoCAD alternatives

Similar to FreeCAD

Autodesk FusionCloud CAD/CAM/CAE with a free personal-use license.
BricsCADDWG-compatible CAD with perpetual licenses.
DraftSightProfessional 2D CAD from Dassault Systèmes.
LibreCADFree, open-source 2D CAD.
SketchUpEasy 3D modelling for architecture and design.

Listed for information; LaunchStall isn’t affiliated with FreeCAD. The quoted description comes from freecad.org. Features and plans change — check the official site for current details.