General CADD Pro is described as 'Or "GCP" as users are calling it is a very powerful 2-D Computer Assisted Design & Drafting program (32 bit accuracy) which embodies the features of Generic CADD (CADD, CADD5 & CADD6), the very popular and well known DOS based CADD program' and is an app. There are more than 25 alternatives to General CADD Pro for a variety of platforms, including Windows, Mac, Linux, Web-based and SaaS apps. The best General CADD Pro alternative is LibreCAD, which is both free and Open Source. Other great apps like General CADD Pro are Autodesk AutoCAD, BricsCAD, DraftSight and QCAD.