3D Viewer Online is described as 'View, Measure, Share and Embed 3D models and 2D drawings directly in your browser. No installation required, works on computers, smartphones and tablets. Files supported : STP, IGS, STL, PLY, OBJ with MTL, DXF, DWG' and is an website in the Photos & Graphics category. There are more than 10 alternatives to 3D Viewer Online, not only websites but also apps for a variety of platforms, including Windows, Linux, Mac and Android. The best alternative is Online 3D Viewer, which is both free and Open Source. Other great sites and apps similar to 3D Viewer Online are STP Viewer (Free), A360 VIEWER (Free), Glovius (Paid) and CAOdrive (Free).
A360 Viewer is a free online viewer for 2D and 3D designs including AutoCAD DWG, DXF, Revit RVT and Inventor IPT, as well as STEP, SolidWorks, CATIA and others. These file types can be viewed with the online A360 viewer, the free version of A360, and the paid version, A360 Team.
3D viewers for CATIA V4/V5/V6, STEP, IGES, Creo, Pro/ENGINEER, NX, JT, SolidWorks, Solid Edge and Inventor files. Take accurate measurements, cut dynamic sections, compare differences between models, review changes. View and search attributes. View, search and filter PMI.
Component of IDA-STEP providing core viewing functionality for all kinds of STEP files (*.stp). This component alone makes a fully usable tool for viewing PDM, CAD and other data, available as STEP (internation standard ISO 10303) files.