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eDrawings Viewer vs Mayo: catalog facts
eDrawings Viewer	Mayo
Free The viewer is free; eDrawings Professional is a separate product.	Free Free and open source.
Windows, macOS, Android, iOS	Windows, macOS, Linux
Free viewing of 3D models and 2D drawings Opens DWG and DXF files	Converts between STEP, IGES, STL and other CAD formats Clip planes, exploded views and measurement
Viewing only; editing and publishing need other eDrawings products Proprietary software	A viewer and converter, not a modelling tool
Downloadable app	Downloadable app
Closed source	Open source
License: Proprietary	License not stated
Not stated if an account is needed	No account 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 September 23, 2026

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