Sketchup
Freemium
SketchUp (formerly Google Sketchup) is a 3D modeling software.
FreeCAD
Open Source
FreeCAD is a parametric 3D modeler made primarily to design real-life objects of any size.
Bricscad
Commercial
BricsCAD is a software application for computer-aided design (CAD).
Autodesk AutoCAD
Commercial
AutoCAD is a commercial computer-aided design (CAD) and drafting software application. Developed and marketed by Autodesk.
LibreCAD
Open Source
LibreCAD is a free Computer-aided design (CAD) application for 2D design. It works on Linux, OS X, Unix and Windows operating systems.
Compare IronCAD with alternatives
Compare Autodesk AutoCAD and IronCAD and decide which is most suitable for you.