NextAuth.js vs Auth0

At a Glance

NextAuth.js

Auth0

NextAuth.js

No features listed.

Auth0

NextAuth.js

Pros

Completely free and open source — no MAU limits, no pricing tiers, no vendor lock-in regardless of how large your app grows+184
Deep Next.js integration means session is available server-side in getServerSideProps, API routes, and App Router with minimal setup+162
Huge community and ecosystem means every common provider (Google, GitHub, Discord) has a working example you can copy+138
You own your session data since it stores in your own database — GDPR compliance is much simpler when you control everything+119

Cons

The configuration is complex and the documentation has gaps that require reading source code or GitHub issues to resolve edge cases

Authentication

Clerk vs Auth0

Authentication

Clerk vs Auth0 vs WorkOS

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Auth0

Pros

Battle-tested enterprise auth with every compliance certification you'd need to close enterprise deals (SOC2, HIPAA, etc.)+163
The rules and actions pipeline lets you add custom logic to every auth step — useful for things like provisioning users in your database on first login+141
Every social provider, SAML IdP, and enterprise connection you could need is supported and well documented+128
Organizations feature handles multi-tenancy with per-org branding and connection settings which is essential for B2B+117

Cons

Pricing is confusing and the free tier limit of 7,500 MAU sounds generous until you hit it and face a $23/mo minimum with rapid escalation at scale+178
The dashboard UX is notoriously complex — simple tasks like finding where to add a social connection take 10 minutes the first time+154
Tenant architecture means your dev, staging, and prod environments are separate tenants that can't share configuration without manual duplication+112
Log retention on the free tier is only 2 days which makes debugging user auth issues that happened last week impossible+89