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That one website that opens and edits AutoCAD DWG files for free

Why it's the pick

Open CAD Studio opens DWG and DXF drawings in your browser and lets you edit them with AutoCAD-style commands, layers and dimensions, then save back to DWG. It's free and open source with no account, and files stay on your device, but it's under active development, so keep a backup of important drawings.

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2 good alternatives

ShareCAD sharecad.org View-only; opens DWG, STEP, SolidWorks and 25+ other formats FreeNo signup Link checked Oct 5
Autodesk Viewer viewer.autodesk.com Autodesk's own free viewer; needs an Autodesk account FreeSignup required Link checked Oct 9

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