The search itself is a trap. No serious developer gives away thousands of hours of work for free. If you see a site promising the it is either:

Always stick to trusted, official community hubs like X-Plane.org, GitHub, or dedicated freeware developer blogs to ensure your downloads are completely safe, legal, and functional.

Download your add-ons exclusively from the official X-Plane.org Store, Threshold Store, or official developer websites.