That said, here's a general piece of information:
Antares Auto-Tune 8 is a popular vocal processing plugin used for pitch correction, creative effects, and advanced vocal processing. It's widely used in the music production industry.
For your creative and professional needs, it's best to invest in software through official channels. Not only does this support the developers and contribute to the creation of more quality software, but it also ensures that you're getting a safe, fully functional product.