The safest way to use ABViewer is through the official developer, CADSoftTools. They offer several options for users:
CADSoftTools offers a fully functional 45-day trial version. This is the safest way to use the software for free, allowing you to experience all features without restrictions 1.2.3.
Upon opening, choose the "Trial" option for 45 days, or enter a legally purchased registration key. Conclusion