Archicad is an architectural, BIM capable design software developed by Graphisoft and available on both Mac and Windows systems.
- A good place to look for alternative software is https://alternativeto.net/software/archicad/
- Two Free/Libre alternatives are BlenderBIM Add-on and FreeCAD. However neither is yet mature enough to be production ready.
- buildingSMART Denmark have written an IFC Export Guide for Revit and ArchiCAD