Auth.js
The default auth solution for Next.js. Built into the framework, supports OAuth, credentials, and magic links with zero vendor lock-in.
GrowingOpen SourceLow lock-in
Pricing
Free tier
Hybrid
Adoption
→StableLicense
Open Source
Overview
What is Auth.js?
Authentication for the Web
Key differentiator
“The default auth solution for Next.js. Built into the framework, supports OAuth, credentials, and magic links with zero vendor lock-in.”
Capability profile
Capability Radar
Honest assessment
Strengths & Weaknesses
↑ Strengths
Next.js apps wanting total control over auth
Curated assessment
Developers who don't want a 3rd party auth vendor lock-in
Curated assessment
Simple social logins (Google, GitHub)
Curated assessment
↓ Weaknesses
Teams wanting a managed 'User Dashboard' out of the box
Curated assessment
Complex B2B multi-tenant permission sytems (you build it yourself)
Curated assessment
Cost structure
Pricing
Free Tier
Available
Completely Free (Self-hosted lib)
Starts at
Free
Model
Hybrid
Enterprise
None
Performance benchmarks
How Fast Is It?
Next step
Get Started with Auth.js
Step-by-step setup guide with code examples and common gotchas.