Auth0 and FusionAuth both provide authorization, authentication and user management.
Migrate to FusionAuth; you'll get more flexibility and control and save money at the same time.
The community edition of FusionAuth can be downloaded and run for free. Test out integrations with other identity providers, including unlimited OIDC and SAML connections. Make sure it works for you. Download now.
Export your users, password hashes, and other configuration from Auth0. With the password hash export, no password changes are required, and your users won't experience any disruption. Import other Auth0 configuration with the management API.
Import your user and password hashes using FusionAuth provided scripts. Migrate other entities such as Connections, Roles and Rules manually. Or, if you have a lot of configuration, script the migration using Auth0 and FusionAuth APIs.
There are a number of different ways applications can be integrated with Auth0, and it would be difficult to cover them all. This guide mentions the typical parts of a migration and in particular focuses on migrating user data from an Auth0 managed user database into FusionAuth.