The Adobe Developer App Builder is a full framework for building custom Adobe apps. It's tightly integrated with Adobe Experience Manager and Adobe Commerce, and it's designed for secure, scalable development with built-in API authorization and user access control. It supports modern technologies like JAM stack, serverless computing, Node and React, so it's geared for enterprise developers.
Another powerful option is Auth0, an authentication and authorization service that offers access controls like Universal Login, Single Sign On and Multifactor Authentication. It's got more than 30 SDKs and Quickstarts to easily integrate with different programming languages and frameworks, and it's good for everything from small startups to big businesses.
For a full-stack user management service, Clerk offers a collection of embeddable UI components, flexible APIs and admin dashboards. It supports multifactor authentication, advanced security and a variety of authentication methods. Clerk also has multi-tenancy and custom roles support, so it's good for managing user access and permissions.