Auth0Reviews of auth0.com

The app itself is fine. I have been using it for years and it fulfills basic needs at a small scale. technically the backend is reliable. Commercially: does not scale, at all. prices (and the commercial practices deployed by the team) are unreasonable. Enterprise features are prohibitively expensive. Getting support or service from them has become a labyrinth since Okta acquired them. (Unless they are expecting money from you....... then they are very accessible)

~1000% increase in cost after 18 months to use Multifactor Authentication (MFA). Yes, probably my mistake we implemented MFA, but didn't check what was actually covered under our subscription level. But it worked well for 18 months. Then they arbitrarily decided to chase us about increasing subscription levels, but the jump in price was untenable. What really annoyed me were the threats to the development team rather than talking to me as the bill payer and account owner, and they wouldn't respond to my questions. It really felt like a bait and switch along with an outsourced subscription uplift program. How can you deliver a authentication solution without MFA these days anyway? Then a month or two later they changed what was included in the subscription levels to include the level of MFA that we needed, but by that time we had already decided that we didn't want to work with a vendor like that and had re-implemented using AWS Cognito. Nice front end. Good integration with other authentication systems. Reasonably quick to implement... but read the inclusions in the subscription level.

If you don't consider yourself a code-monkey, you can definitely implement your own auth from scratch. These kinds of companies lie about how difficult it is to create an auth workflow in your backend and exaggerate the problems of security/privacy/compliance/whatever. But yes, it still makes sense to use one of them if you want to get out of localhost quickly. Would give it 5 stars if the product was easy to implement, but unfortunately, it's a f-ing mess. Easier than Okta but 100x more cumbersome than other solutions like Frontegg or PropelAuth