ADA 3D STL Viewer
The STL Viewer is FREE software for the visualization of STL or OBJ meshes created in packages such as 3D Studio Max, MAYA, and Z Brush, modeled in CAD systems, or generated from 3D digitalization of physical objects. With its simplified user interface, fast rendering, and ability to handle even big volumes of data the STL Viewer is an ideal tool for examining polygonal meshes. STL file format is a common format for 3D digitizing, rapid prototyping, animation, and 3D data archiving software. If you receive triangular mesh data containing CAD models, scan data, or 3D designs you can quickly see it in the viewer. You may also find it useful if you are a company or person providing such data to your customers and need a visualization tool to give away with it. Loading polygonal meshes in STL and OBJ file formats. Quickly resetting the object in default views, front, back, left, right, top and bottom.
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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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F3D
F3D is a fast and minimalist 3D viewer. It supports many file formats, from digital content to scientific datasets (including glTF, STL, STEP, PLY, OBJ, FBX, Alembic), can show animations and support thumbnails and many rendering and texturing options including real time physically based rendering and raytracing.
It is fully controllable from the command line and support configuration files. It can provide thumbnails, support interactive hotkeys, drag&drop and integration into file managers.
F3D also contains the libf3d, a simple library to render meshes, with C++ and Python Bindings, as well as experimental Java and Javascript bindings.
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