ArchiCAD - CAD graphics software package for architects, created by Graphisoft. Designed for designing architectural and building structures and solutions, as well as landscape elements, furniture, etc.
The package uses the concept of a virtual building. Its essence is that the ArchiCAD project is a life-size volumetric model of a real building that exists in the memory of a computer. To perform it, the designer at the initial stages of working with the project actually "builds" the building, using tools that have their full analogues in reality: walls, floors, windows, stairs, various objects, etc. After completing the work on the "virtual building," the designer is able to extract various information about the designed object: floor plans, facades, sections, explorations, specifications, presentation materials, etc. It interacts with various engineering programs through the IFC format.