NextAuth.js

NextAuth.js is an open-source authentication library for Next.js applications. It provides a complete authentication solution, supporting various authentication providers like OAuth, email, and credentials, and can be integrated with different databases or JWTs for session management.

It is designed for developers building Next.js applications who need to implement secure and flexible authentication. NextAuth.js simplifies the process of adding authentication, offering features such as session management, secure callbacks, and easy integration with popular services.