Cadwork
cadwork includes IFC-based virtual design and construction software tools developed by cadwork informatik AG. cadwork is a solution for 3D wood manufacturing and a solution for Building Information Modeling which includes 3D design, 4D scheduling, 5D pricing, and 6D execution.
cadwork's primary application is in woods: Architectural and structural carpentry with features for glue laminated timber and stairs
With a commitment to opensource ideals, cadwork viewers are free which allows zooming, panning, and printing; however, the freeware version does not allow modifying a file.
cadwork is IFC compatible with several Certifications, such as IFC 2x3.