Open source authentication for Next.js applications
Completely free and open source — no MAU limits, no pricing tiers, no vendor lock-in regardless of how large your app grows
Deep Next.js integration means session is available server-side in getServerSideProps, API routes, and App Router with minimal setup
Huge community and ecosystem means every common provider (Google, GitHub, Discord) has a working example you can copy
You own your session data since it stores in your own database — GDPR compliance is much simpler when you control everything
The configuration is complex and the documentation has gaps that require reading source code or GitHub issues to resolve edge cases
Email magic link setup requires configuring your own SMTP provider and debugging delivery issues isn't covered in the docs
TypeScript types have historically been incomplete or incorrect and augmenting the session type requires boilerplate workarounds
No built-in UI components — you have to build every login page, profile page, and sign-out button yourself from scratch
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