view3dscene
view3dscene is a viewer for many 3D model formats: glTF, X3D, VRML, Collada, 3DS, MD3, Wavefront OBJ, STL and (2D) Spine JSON and sprite sheets (in CGE, Cocos2d, Starling XML formats). Explore the virtual world with collisions, gravity, animations, sensors, shadows, mirrors, shaders, and more. You can also convert all models to X3D. If you already have Castle Game Engine, then just run view3dscene executable in CGE bin subdirectory. There's no need to download it separately. All the 3D and 2D model formats supported by Castle Game Engine can be opened, X3D, VRML, Collada, 3DS, MD3, Wavefront OBJ, Spine JSON. Various navigation modes are available. Examine (easily rotate and move the whole model), walk (walk like in FPS games, with collision detection, gravity and related features available), fly (similar to Walk but without gravity), 2D. You can convert between X3D classic and XML encodings (in both directions), and you can convert from VRML 2 to X3D.
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DWG TrueView
View and convert 2D and 3D DWG files for free. Open DWG files or convert them to work with older versions of AutoCAD software. DWG is a technology environment that includes the capability to mold, render, draw, annotate, and measure. It is also a reference to .dwg, the native file format for AutoCAD and many other CAD software products. Autodesk created .dwg in 1982 with the very first launch of AutoCAD software. DWG files contain all the information that a user enters in a CAD drawing. This data can include designs, geometric data, maps and photos. The .dwg file format is one of the most used design data formats, found in nearly every design environment.
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CAD Assistant
Open Cascade CAD Assistant is a powerful offline 3D CAD viewer and converter with simple and intuitive interface, free for both personal and commercial use. Originally developed as a testbed and showcase for the Open CASCADE Technology on mobile platforms, the solution has been appreciated as fast and handy 3D viewer by thousands of end-users on mobiles and desktops worldwide. CAD Assistant brings the power of open technologies to the hands of engineers working with 3D data. CAD Assistant is based on open source libraries (Open CASCADE Technology, Qt, FreeType, FreeImage, etc.) and employs open formats for CAD and mesh data (STEP, IFC, IGES, BREP, glTF, JT, PLY, STL, OBJ, 3DM). It also supports a set of other file formats like DXF, SAT (ACIS), XT (Parasolid). Viewing mesh models with associated data is an additional functionality included in CAD Assistant. Mesh can be read from files in PLY format.
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SimLab CAD Viewer
SimLab CAD Viewer is a mobile application that allows you to view and navigate, on the go, computer-aided 3D designs and architectural models on iOS and Android devices. SimLab CAD Viewer reads the SimLab Archive File (.ZIM) exported either from SimLab Composer or the Android/iPad Exporter plug-in which is available for SketchUp, Rhino, SolidWorks, Inventor, 3ds Max, Maya, and Modo. The SimLab Archive Files (.ZIM) include all the necessary data needed for displaying models on smartphones and tablets. The data include geometries, colors, materials, textures, cameras, scene states, and animations. SimLab CAD Viewer is currently available for free and can be downloaded from the App Store (iOS) and Google play (Android). Upon launching SimLab CAD Viewer, list of pre-installed sample models appears to the user allowing him/her to start quickly in demonstrating the capabilities and the features that SimLab CAD View offers.
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