EnSuite has viewers for all commonly used CAD and image file formats. Even better, you do not need CAD software or licenses to view any of the supported file types. Viewers are currently available for CATIA V4, CATIA V5, CATIA V6 3DEXPERIENCE, Parasolid, IGES, Inventor, Autodesk Design Review, JT, Creo, SOLIDWORKS, Solid Edge, ACIS, STEP, NX, CGR, and STL.
EnSuite viewers not only support geometry in the file, but also has an entity tree displaying the list of entities with part and assembly structures. EnSuite viewers also support entity colors, reference entities and annotation notes. EnSuite viewer has tools like standard views, camera operations, display options, section views, and more.