cityengine:
Basic 2D and 3D Format Support
For integration with 3D/CAD applications, CityEngine supports the well-known formats OBJ, 3DS and DXF, as well as VOB for e-on software's Vue. The exporter can collect textures into a single folder for easy re-use and sharing with other tools.
Also, aus dem ArchiCAD heraus kannst Du mit OBJ, 3DS und DXF deine Daten austauschen.
MfG
cad_2011