Top A360 VIEWER Alternatives for 2D and 3D Design Viewing
A360 Viewer is a widely used free online viewer for a vast array of 2D and 3D designs, including popular formats like AutoCAD DWG, DXF, Revit RVT, Inventor IPT, as well as STEP, SolidWorks, CATIA, and many others. While A360 Viewer, in its free or paid A360 Team versions, offers robust capabilities for viewing files like 3DM, 3DS, ASM, CATPART, CGR, DAE, DGN, DWG, DXF, FBX, IFC, IGES, IGS, IPT, JT, OBJ, PRT, RVT, SKP, SLDASM, SLDPRT, STEP, STL, and STP, users often seek A360 VIEWER alternative solutions for various reasons – be it specific feature requirements, platform preferences, or cost considerations. This article explores some of the best alternatives available.
Best A360 VIEWER Alternatives
Whether you're looking for a free solution, a commercial powerhouse, or something with specific CAD translation capabilities, there's an A360 VIEWER alternative out there for you. Here's a curated list of top contenders:

STP Viewer
STP Viewer is a free software that specializes in viewing 3D STEP files (.stp, .step file format). It's a straightforward, no-frills option for Windows users who primarily work with STEP files, making it a good A360 VIEWER alternative if your needs are focused solely on this widely used 3D format.

3D Viewer Online
3D Viewer Online offers a convenient web-based service that works across computers, tablets, and smartphones, requiring no installation. As a freemium web platform, it provides an excellent A360 VIEWER alternative for users who need to view 3D models on the go or prefer a cloud-native solution without the hassle of software downloads.

Glovius
Glovius is a commercial software offering robust 3D viewers for a wide range of CAD files, including CATIA V4/V5/V6, STEP, IGES, Creo, Pro/ENGINEER, NX, JT, SolidWorks, Solid Edge, and Inventor files. Available on Windows, Android, iPhone, and iPad, Glovius goes beyond simple viewing, allowing users to take accurate measurements and cut dynamic sections, making it a powerful A360 VIEWER alternative for professional users needing advanced analysis features.

eDrawings Viewer
eDrawings Viewer is a freemium Windows application that allows users to view, print, and review all types of eDrawings files. It also includes a built-in viewer for native SolidWorks®, AutoCAD®, DWG, and DXF™ files. This makes eDrawings Viewer a strong A360 VIEWER alternative, especially for those working within the SolidWorks and AutoCAD ecosystems, offering comprehensive viewing and collaboration capabilities.

IDA-STEP Viewer
IDA-STEP Viewer is a component of IDA-STEP, providing core viewing functionality for all kinds of STEP files (*.stp). This freemium tool is available across Mac, Windows, and Linux, making it a versatile A360 VIEWER alternative for cross-platform users who need a dedicated and fully usable tool for viewing PDM, CAD, and other STEP-based files.

VariCAD Viewer
VariCAD Viewer is a free viewer, convertor, and printing software that supports 2D DWG, DXF, 3D STEP, and 2D/3D VariCAD file formats (.DWB). Available for Windows and Linux, it even boasts GNU/linux-libre features. For users seeking an open-source friendly, free A360 VIEWER alternative with comprehensive 2D/3D file support and conversion capabilities, VariCAD Viewer is an excellent choice.

ENSUITE
ENSUITE is a commercial, standalone multi-CAD software for Windows that allows users to view, translate, simplify geometry, and access engineering information. Its ability to handle multiple CAD formats and perform geometry simplification makes it a robust A360 VIEWER alternative for professionals needing more than just viewing capabilities.

ENSUITE-VIEW
ENSUITE-VIEW is a free personal use Windows application that enables users to view, measure, and calculate bounding boxes, among other features. It provides access to critical engineering information within CAD data and can view all major CAD formats, including CATIA V4 (.exp, .model, .session). This makes ENSUITE-VIEW a powerful free A360 VIEWER alternative for individuals who need detailed insights into their CAD files.

IGES2STEP
iges2step is a freeware CAD file viewer for Windows XP/2000/NT. It specifically allows viewing IGES and STEP files and translating between these formats. For users who frequently work with IGES and STEP files and require conversion capabilities, iges2step serves as a practical and free A360 VIEWER alternative focusing on these specific file types.
The best A360 VIEWER alternative for you will depend on your specific needs, the types of files you work with most often, your preferred operating system, and your budget. Explore these options to find the perfect fit for your 2D and 3D design viewing requirements.