Is there software that can view .dwg files ?
8 Answers
DraftSight. It doesn't cost money and they'll give you a nice .deb installer... but it's not open source or free software.
On the upside, it will also let you create and edit .dwg files.

I use ODA Drawings Explorer (formerly known as Teigha Viewer) available from the Open Design Alliance, and also the ODA File Converter (formerly known as Teigha File Converter) from the same provider. Packages are available for Ubuntu. It is freeware but not free nor open source software.
ODA Drawings Explorer incorporates the power and flexibility of ODA into a single application that can render both .dwg files and .dgn files using a common command interface for both formats.
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de·caff Viewer
The de·caff Viewer is a pure Java program for viewing AutoCAD® DWG, DXF and SHX files.
- Supports textual and binary DXF format from the version written by AutoCAD® R7 up to 2018.
- Supports DWG from the version written by AutoCAD® R13 up to 2018.
- Supports SHX (binary shape files) in all known formats.
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I used ZWCAD Viewer https://www.zwsoft.com/zwcad/viewer
It's free, was easy to install on Ubuntu 16.04 and could open my .dwg files without crashing.
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BricsCAD, free 30 day trial after registration. https://www.bricsys.com
May try VariCAD also. https://www.varicad.com/
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My all time fav is Inkscape - Free, opensource and mature. Find it within the “Ubuntu software” app also. It is a great vector drawing progam too in it’s own right.
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