Auth0 alternatives are available due to its cost, customization limitations, and support issues. Top Auth0 alternatives in 2024 include WorkOS, AWS Cognito, Keycloak, Frontegg, and Firebase. Each offers unique features, pricing structures, and best suitability for specific scenarios. When choosing an alternative, consider factors such as cost, customization options, and support to ensure the best fit for your application's needs. Migration from Auth0 can be complex but may be simplified by using management APIs or seeking professional help. WorkOS is a strong alternative for enterprise requirements, offering essential features like Directory Sync, OIDC SSO, SAML SSO, and audit logs. Keycloak is an open-source identity and access management solution that requires more hands-on management but can be cost-effective for teams with the expertise to self-host and maintain it.