STEP Viewer 3D

Developer: Afanche Technologies, Inc.

Current Version: 3.4.1

Last Updated: 2 years ago

Download Size: 29.7 MB - Download


This is a great 3D STEP data file (.step or .stp) viewer. STEP format (ISO 10303) is an ISO standard for 3D data exchange. It is widely supported by almost all 3D CAD, CAM, CAE, PLM applications including CATIA, Autodesk Inventor, SolidWorks, NX, ProE (PTC Creo, ProEngineer), etc.

The app provides many 3D features including rotating, panning, zooming in/out, changing rendering color, choosing surface or wireframe rendering mode, etc. It also provides you information about your files, for instance, the file size, the height, width and depth of your model, total surface area, total volume, etc.

The app supports loading multiple models at the same time so that you can view them together. The files don't need to be in same data format. It is extremely helpful when you want to compare your data sets to make sure everything works correctly. The app provides unzip function. It can automatically unzip files (in .zip format) and load 3D data in it.

The app also provides you strong 3D data exporting capability. You can export 3D model in STL, DAE, DXF, OBJ, VRML, PLY, OFF and ATD formats.

The app is very powerful and super easy to use. It is very fast and capable of loading huge models as big as 200MB. It is a great tool for viewing, reviewing and collaborating on 3D assets.

The app is part of ATView3D 3D visualization tool family developed by Afanche Technologies. ATView3D 3D visualization apps are widely used by professionals all over the world. If you need 3D viewer for other formats, please search 'Afanche' or 'ATView3D' to find more 3D apps. Afanche Technologies is a company specialized in 3D technologies. For more info, please visit our website


Release Notes:

Fixed app icon display issue


Most Helpful Reviews

Version 2.4
Review by habboud

Works as described - It is a simple STP file viewer and works as intended. I just downloaded a couple of STP files for connectors and was able to see them. However, it is not perfect. One model of a rubber dome was represented as an eight-sided polygon instead of perfectly round. Also, it would be nice if the app can provide some way to get an idea of dimensions, e.g. perhaps show a plane with grids on it, with an option to specify grid spacing. Nevertheless, I would recommend this app.

Found helpful by 1 out of 1 people
Version 2.3
Review by cln81

Doesn’t seem to work - Tried it and have not been able to get it to work correctly. All invididual components of a larger assembly appears in one big tangled cluster. Will try to different files and settings and update if I get it to work.

Found helpful by 6 out of 6 people

More Reviews for Current Version

Version 3.4.1
Review by Rex Mantlepiece

Useful if nothing else is available - Cons: Long load times; Lack of tools common to other modeling programs; Clunky overall interface; Expensive for what you get; Sectioning involves manually entering a measurement rather than a draggable tool. Pros: Lets you open and view .step files. Summary: There are not a lot of .step viewers on the Mac, so this program gets 3 stars for simply existing. Not a ringing endorsement, but better than nothing due to the lack of competition.

Found helpful by 2 out of 2 people