If you're looking for a powerful power system analysis software, ETAP is definitely worth considering. The free download version is a great starting point, but be aware of its limitations. For a full-featured experience, consider purchasing a license or contacting OTI for more information.

Please note that downloading ETAP from unauthorized sources may pose security risks or violate software licensing agreements. It's recommended to download the software from the official OTI website or authorized distributors.

ETAP is a comprehensive software solution developed by OTI (Open Technology International) for designing, simulating, and analyzing electrical power systems. It's widely used by electrical engineers, power system designers, and researchers to model and analyze various power system scenarios, including transient and steady-state conditions.