Get Started with Auth.js

Open-source authentication for the web (formerly NextAuth.js), free and framework-native.

Getting Started

The Auth.js team maintains comprehensive docs that cover installation, configuration, and common patterns.

Auth.js offers a free tier — sign up to get started without any payment.

Our full tool profile covers Auth.js's strengths, weaknesses, pricing, and how it compares to alternatives.

Next.js apps wanting free, self-hosted auth

Native integration, no per-user cost

Developers comfortable owning auth plumbing

Full control over sessions and providers