DWGSee is not available for Mac but there are some alternatives that runs on macOS with similar functionality. The best Mac alternative is ZWCAD Viewer, which is free. If that doesn't suit you, our users have ranked more than 10 alternatives to DWGSee and five of them are available for Mac so hopefully you can find a suitable replacement. Other interesting Mac alternatives to DWGSee are DXF View (Paid), ODA Viewer (Free), de·caff Viewer (Free) and de·caff DXF Viewer (Free).
ZWCAD Viewer is a lighter, faster and more accurate application developed by ZWSOFT for CAD users, it provides users with a convenient way to view and plot drawings. Open 2D/3D (Hidden Hode) *.dwg | *.dwt | *.
ODA Viewer incorporates the power and flexibility of ODA into a single application that can visualize all ODA supported file formats and illustrate other visualize-related features like visual styles and markup.
The de·caff Viewer version 3.x is a Java based program for viewing AutoCAD® DWG, DXF and SHX files. It can be used on any computer with a Java Runtime Environment installed. Usage is free, see License for more info.
The viewer reads 2D and 3D ASCII and binary DXF files (which may even be packed with zip, gzip and bzip2, but you should prefer zip), and understands a noticable subset of the features of newer DXF versions.