Auth0 is a mature authentication and authorization platform that provides secure access control with features like Universal Login, Single Sign On, Multifactor Authentication, and customizable actions. It has integrations with more than 30 SDKs and Quickstarts, making it a good choice for managing customer identities across many industries. Auth0 also offers a flexible and scalable solution for startups and enterprises, with free trial options.
Another good option is Clerk, a full-stack user management platform that streamlines authentication and user management with embeddable UI components, flexible APIs and admin dashboards. Clerk supports a variety of authentication needs, including multifactor authentication, social sign-on and secure password authentication. It integrates with popular frameworks and tools and offers features for multi-tenancy, so it's good for many types of application environments.
If you're looking for an identity security solution, CyberArk has a broad set of features including secure Single Sign-On, Adaptive Multi-Factor Authentication and lifecycle management. It's good for many industries, with flexible pricing and a large partner network, so it's a good option for protecting identity security posture and moving to a Zero Trust model.