OPAL-RT offers a wide range of simulator platforms to meet all current industry needs and forthcoming challenges. All simulators are based on a modular and flexible design, and are fully customizable and expandable for specific I/O requirements. This document compares all OPAL-RT's simulator platforms: OP4512, OP4610XG, OP5705XG, OP5707XG, OP5020XG, OP5025XG and OP5033XG.