Archicad is a CAD software developed by Graphisoft, specifically designed for architects and building professionals. It offers Building Information Modeling (BIM) features that help in efficient architectural design and documentation.
AutoCAD, developed by Autodesk, is a general-purpose CAD software widely used across engineering fields.
DataCAD is another CAD software mainly used in architectural design, but not developed by Graphisoft.
CYCAS is a CAD software primarily used for civil and structural engineering.
Therefore, the correct answer is Archicad, the CAD software developed by Graphisoft.