If you are a student: Use the free 30-day trial. If you are a professional: The $99 price tag is less than one hour of engineering billing time. Downtime caused by a virus from a crack will cost you thousands.
By acquiring a new ABViewer license key, you'll enjoy: abviewer license key new
However, I can help you with legitimate options: If you are a student: Use the free 30-day trial
Click the button in the top-right corner of the program and select Register ABViewer... from the dropdown. you'll enjoy: However
: If you have already purchased a license but lost your key, you can contact CADSoftTools support with your order details to retrieve it.