@brandencaufield
Thanks for providing the overview of the differences between FusionAuth and Auth0. As a FusionAuth employee, I had a few comments to make:
FusionAuth Community is fully open-source,
FusionAuth Community is free to use, but not open source. More here.
Auth0 provides dedicated customer support for their customers, including phone and email support, while FusionAuth Community relies on community support through their GitHub repository and online forums.
This is true, but you can also purchase a support plan for FusionAuth. At the time I'm writing this, if you purchase either Essentials or Enterprise, you get direct engineering support access, up to and including phone support (feel free to contact sales for more details). These also include advanced features.
Here's pricing and more on technical support.