ABViewer is described as 'is multipurpose software for managing drawings. It enables you to view, edit, convert (PDF to DWG included), measure and print DWG/DXF, PLT, STP, IGS and other files, as well as 3D models and raster images' and is an app in the Photos & Graphics category. There are more than 10 alternatives to ABViewer for a variety of platforms, including Windows, Mac, Linux, Online / Web-based and Android. The best alternative is FreeCAD, which is both free and Open Source. Other great apps like ABViewer are LibreCAD (Free, Open Source), Autodesk AutoCAD (Paid), DraftSight (Paid) and BricsCAD (Paid).
LibreCAD (originally QCad then CADuntu) is an open source 2D CAD application for Windows, Apple and Linux. It is based on Qt, which is a leading cross-platform application and UI development framework.
AutoCAD is a leading CAD (computer-aided design) software used professionally throughout architectural, electrical, mechanical and other engineering and design industries. It was once available under a perpetual license but is now accessed solely through a subscription.
DraftSight is a professional-grade, open 2D CAD product for users who want a better way to read, write and share DWG files. DraftSight is easy to use and is available for professional CAD users, students and educators to download and activate for free.
BricsCAD the first all-in-one CAD design solution in .dwg that answers all your needs; 2D drafting, 3D modeling, mechanical design, and BIM. BricsCAD is a cost-effective, innovative, and familiar CAD solution.
nanoCAD is a pro-grade 2D CAD system with native DWG support and full customizability. It is totally free, for business, professional, or personal purposes. It is fast, lightweight, capable, and , unlike most free CAD programs, completely uncrippled. nanoCAD includes:
ZWCAD software, as a highly reliable and powerful CAD tool, meets the needs of 2D/3D design & drafting industry, including architecture, engineering, construction (AEC), mechanics, electronics...and anyone who creates CAD drawings.
progeCAD Smart 2009 is a limited version of progeCAD . It is free for private, non-commercial use only. You need to register the software to continue using it after 30 days. Of course registration is totally free.
Autodesk® DWG TrueView™ software is a free* stand-alone DWG™ viewer with DWG TrueConvert™ software included. Built on the same viewing engine as AutoCAD® software, DWG TrueView enables you to view the latest DWG and DXF™ files, just as you would in AutoCAD.