NextAuth.js
Auth & InfrastructureOpen-source authentication library for Next.js with built-in support for 60+ OAuth providers, JWT/session strategies, and database adapters.
NextAuth.js is a free, open-source authentication library for Next.js applications with built-in support for 60+ OAuth providers, email/passwordless auth, and credentials-based login, handling authentication flows, session management, and security best practices out of the box. It supports both JWT-based and database-backed sessions, works seamlessly with Next.js App Router architecture, and includes CSRF protection, signed cookies, and automatic token rotation with adapters for MySQL, PostgreSQL, MongoDB, and SQLite. While it excels at getting auth running quickly for standard use cases, it is limited to the Next.js ecosystem and developers needing complex custom flows or MFA will require significant additional implementation work.
Best for
Developers building Next.js applications who want a free, open-source authentication solution with good OAuth provider support and are comfortable with some DIY implementation for advanced features.
Last updated: February 23, 2026
20/50
Overall Score
API Quality
10/10
GTM Relevance
10/20
PricingFreemium
Complexityhard
Learningmedium
Visit next-auth.js.org →API Analysis
REST API
✓
Available
Webhooks
—
—
GraphQL
—
—
OAuth
✓
Available
gmail
Pricing
freeFree Tier
Free and open source
Strengths & Weaknesses
Strengths
Free and open-source with no usage limits or pricing tiers to worry about as you scale
Native Next.js integration with excellent support for App Router, Server Components, and Edge Runtime
Extensive provider support with 60+ OAuth providers pre-configured and ready to use
Flexible session management supporting both JWT and database-backed sessions
Complete data ownership and self-hosting control without vendor dependencies
Weaknesses
Documentation can be outdated or incomplete, especially for newer Next.js App Router patterns
Custom authentication flows and advanced features like MFA require significant additional implementation work
Limited to Next.js ecosystem - not suitable for multi-platform applications requiring web, mobile, and desktop auth
Email/password authentication setup is more complex compared to managed alternatives like Clerk or Auth0
Alternatives
Reviews
Links
FAQ
What is NextAuth.js?
NextAuth.js is a free, open-source authentication library for Next.js applications with built-in support for 60+ OAuth providers, email/passwordless auth, and credentials-based login, handling authentication flows, session management, and security best practices out of the box. It supports both JWT-based and database-backed sessions, works seamlessly with Next.js App Router architecture, and includes CSRF protection, signed cookies, and automatic token rotation with adapters for MySQL, PostgreSQL, MongoDB, and SQLite. While it excels at getting auth running quickly for standard use cases, it is limited to the Next.js ecosystem and developers needing complex custom flows or MFA will require significant additional implementation work.
Is NextAuth.js free?
Yes, NextAuth.js offers a free tier. Free and open source
What are NextAuth.js alternatives?
Popular alternatives to NextAuth.js include Clerk, Auth0, SuperTokens, WorkOS, FusionAuth, Supabase Auth. Compare features, API quality, and pricing on GTM Tools.
Does NextAuth.js have an API?
Yes, NextAuth.js provides a REST API. API quality is rated EXCELLENT. Documentation: https://next-auth.js.org/getting-started/rest-api.
Who is NextAuth.js best for?
Developers building Next.js applications who want a free, open-source authentication solution with good OAuth provider support and are comfortable with some DIY implementation for advanced features.