What is the Best Facial Recognition Software to Use in 2021?

After extensively researching the best software for face recognition, I came to the conclusion that almost all the articles currently published are just copied and pasted from advertisements. Even worse, most of these articles recommend outdated libraries and services that are not supported anymore. Some of their suggested solutions can't even run on modern operating systems! I promise, this is not one of those articles. I've done my best to make a comprehensive list of all the modern face recognition solutions on the market.