List of free and open source 2D and 3D CAD viewers.


- FreeCAD

You can use this free 3D CAD software as a 3D and 2D CAD viewer.

Import/export to standard formats such as STEP, IGES, OBJ, STL, DXF, SVG, STL, DAE, IFC or OFF, NASTRAN, VRML in addition to FreeCAD's native FCStd file format. The level of compatibility between FreeCAD and a given file format can vary, since it depends on the module that implements it.


- ZWCAD DWG Viewer

View CAD Files Quickly and Easily

Compatible: Open DWG, DXF, DWF and DWT; file formats from version R12 to 2013

More Than a Viewer: Layer properties management, on/off, freeze/thaw, lock/unlock; Measure tools; Distance, Area, Mass Properties, List; Properties Palette displays details; Measure with snap and; tracking to ensure accuracy; Print with CTB/STB plot styles; Plot to PDF, JPEG and PNG


- VariCAD Viewer

VariCAD Viewer is a free viewer, convertor and printing software working with 2D DWG, DXF, 3D STEP and 2D/3D VariCAD file formats. VariCAD viewer allows you to convert DWG to DXF and vice-versa, convert STEP to 3D IGES or STL formats, print 2D DWG, DXF or VariCAD formats and use batch print or batch conversions. All conversions are also available between VariCAD native format and other listed formats. VariCAD viewer offers settings of 3D display methods (like light source or perspective). 3D display can be also exported into high-resolution bitmap file.


- eDrawings

View the most popular native 3D (SOLIDWORKS) and 2D (DWG / DFX) formats in a single viewer. Interrogate the models using the measure tool as well as move and section commands to view model internals. Once opened, files can be saved as eDrawings files for lightweight sharing.


- Free Autodesk file viewers

See supported files and features, and choose the free viewer that's right for you.


- Solid Edge Free Viewer

The free Solid Edge Viewer allows you to interactively view Solid Edge 3D models and drawings. Rotate, pan, and zoom 3D CAD models, and save images and email them as needed to provide an efficient collaborative process among your team, your customers, and your suppliers. The Solid Edge Viewer is easy to download and install, and allows you to open and view Solid Edge assembly, part, sheet metal and draft files, as well as 2D files including AutoCAD DXF and DWG files.


- JT2Go

JT2Go is the industry leading no charge 3D JT viewing tool.

JT2Go has been unanimously embraced by industry leaders as the premier free viewing tool for JT data. By providing a comprehensive Desktop application and mobile platform solutions on iOS and Android, Siemens has made viewing of JT data available for everyone in nearly any situation.