Besides being the native format for such influential CAD packages as AutoCAD, BricsCAD, IntelliCAD, Caddie and Open Design Alliance, it is also supported by numerous third party programs due to its popularity.ĭWF - Design Web Format. This file format is AutoCAD’s proprietary binary file format, used for storing 2D and 3D data and metadata. In this article, you‘ll be able to find some of the best free DWG viewers to match all your needs.īut first, let’s break down the three native AutoCAD formats - DWG, DWF and DXF.ĭWG stands for “drawing”. There are plenty of programs, which allow you to view, annotate and even modify DWG files for free, online and on every existing operating system. Do not worry about it though, you probably don’t need AutoCAD anyway, if you don’t intend to create your own intricate CAD designs. It’s a shame that AutoCAD is more than pricy - the monthly fee is $200. Since Autodesk developed AutoCAD almost forty years ago, electronic technical drawings became a huge part of designing and engineering process.

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