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GrabCAD Library - The GrabCAD Library offers millions of free CAD designs, CAD files, and 3D models. Join the GrabCAD Community today to gain access and download!
DataCAD - DataCAD is a computer-aided design and drafting software for 2D and 3D architectural design and drafting
Thomas Network - ThomasNet.
AutoCAD Arch - Design and document more efficiently with the AutoCAD Architecture toolset, created specifically for architects.
ActCAD - ActCAD is one Software for many applications covering the primary domains of – Architecture, Engineering, Construction (AEC) including Structural, Electrical, and Mechanical.
AutoCAD Plant 3D - AutoCAD Plant 3D is a BIM software that lets you create, modify, and manage schematic piping and instrumentation diagrams.