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DWG (from drawing) is a proprietary [3] binary file format used for storing two- and three- dimensional design data and metadata.It is the native format for several CAD packages including DraftSight, AutoCAD, ZWCAD, IntelliCAD (and its variants), Caddie and Open Design Alliance compliant applications.
Open Design Alliance is a nonprofit organization creating software development kits (SDKs) for engineering applications. ODA offers interoperability tools for CAD, BIM, and Mechanical industries including .dwg, .dxf, .dgn, Autodesk Revit, Autodesk Navisworks, and .ifc files and additional tools for visualization, web development, 3D PDF publishing and modeling.
VDA-FS is a CAD data exchange format for the transfer of surface models from one CAD system to another. Its name is an abbreviation of "Verband der Automobilindustrie - Flächenschnittstelle", which translates to the "automotive industry association - surface data interface". Standard was specified by the German organization VDA
It is a binary file format representing planar geometric shapes, text labels, and other information about the layout in hierarchical form (two-dimensional/2D CAD file format). The data can be used to reconstruct all or part of the artwork to be used in sharing layouts, transferring artwork between different tools, or creating photomasks .
DGN (design) is the name used for CAD file formats supported by Bentley Systems, MicroStation and Intergraph's Interactive Graphics Design System (IGDS) CAD programs. [1] The DGN format is used in construction projects, including buildings, highways, bridges, process plants, shipbuilding. DGN is a competing format to Autodesk's DWG. [1]
Neutral file exchange uses an intermediary neutral format to translate data between CAD systems. This method starts from a pre-processor embedded in the original CAD system, which generates the neutral file from the originating CAD format. The target CAD system post-processes the neutral file and converts it into the target native format. [7]
GrabCAD evolved into a community for engineers to share CAD models and moved its HQ to Cambridge, MA in 2011. According to the company site, GrabCAD was founded with the goal of bringing together all the tools engineers need to manage and share CAD files into one platform. [2] On September 16, 2014, GrabCAD was acquired by Stratasys. [3]
Caddie initially used its own proprietary file format .DRW (binary) and an ASCII .CEX (Caddie Exchange format). Caddie could also import and export native AutoCad .DWG and .DXF file formats, but since version 10, Caddie rewrote its core kernels and now uses as native file format OpenDWG. [11] Version 10 was released in March 2005. [12]