NextAuth.js
Open-source authentication library for Next.js applications that simplifies session management, OAuth/OIDC provider integration, email/passwordless sign-in, and JWT handling without requiring a backend. Developers use it for quick auth setup with minimal configuration, broad provider support, and the ability to bring their own database or run database-free.
Overview
| Category | Auth |
| Ecosystem | vercel |
| Self-Hostable | Yes |
| On-Prem | No |
| Best For | hobby, startup, growth |
| Last Verified | 2026-02-13 |
Pricing
| Model | freemium |
| Free Tier | Basic authentication features- Limited to a certain number of users or requests
- No customer support
|
| Unit Price | $0 / monthly active users (MAU) |
| Source | pricing page |
Plans
| Plan | Monthly | Yearly | Includes |
|---|
| Basic | $0 | $0 | Basic features for authentication |
| Pro | $15 | $150 | Advanced features, priority support |
Strengths & Weaknesses
Strengths:Weaknesses:- steep learning curve for advanced configurations
- callback URL routing can be fragile
- limited built-in UI components
- self-hosting requires careful setup
- now redirects to Better Auth (successor project)
When to Use
Best when:- Next.js projects
- need OAuth/OIDC integration
- want open-source auth solution
- rapid prototyping
- email/passwordless authentication
- serverless environments
Avoid if:- need enterprise-grade support
- strict compliance auditing needed
- non-Next.js framework
- require managed SaaS with uptime guarantees