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Autodesk Viewer vs Online 3D Viewer: catalog facts
Autodesk Viewer	Online 3D Viewer
Free Free to use in the browser.	Free Free and open source.
Web	Web
Opens many CAD formats, including DWG, RVT, STEP and SolidWorks files No software to install	Opens many 3D and CAD formats, including STEP, IFC and FBX Runs in the browser with no install
Requires a WebGL-capable browser A viewer only, not an editor	A viewer only, not a modeling tool
Web application	Web application
Closed source	Open source
License not stated	License: MIT
Not stated if an account is needed	No account needed
Needs internet	Needs internet
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked October 2, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.