One of the most popular comparisons on IT Central Station is Auth0 vs Okta.
One of the users on our site says about Auth0, " It's more efficient than regular session management through a database because I only request profile data when needed."
Another user says about Okta, "We are able to deploy solutions rapidly and also have a better idea on licensing as we can easily see who has access, ...
I agree , on most aspects, they are on par. During my investigations I found Auth0 to have better documentation with case-studies and and easy startup-code snippets. Also RBAC seems to be simpler with Auth0