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eDrawings Viewer vs CAD Assistant: catalog facts
eDrawings Viewer	CAD Assistant
Free The viewer is free; eDrawings Professional is a separate product.	Free Free for personal and commercial use.
Windows, macOS, Android, iOS	macOS, Android
Free viewing of 3D models and 2D drawings Opens DWG and DXF files	Opens STEP, IGES and other CAD formats Converts between 3D formats
Viewing only; editing and publishing need other eDrawings products Proprietary software	Viewer and converter only, not a modelling tool Closed source despite being built on the open OCCT kernel
Downloadable app	Downloadable app
Closed source	Closed source
License: Proprietary	License not stated
Not stated if an account is needed	Not stated if an account is needed
Not stated if it works offline	Works offline
Official website Full listing and sources Checked October 1, 2026	Official website Full listing and sources Checked October 1, 2026

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