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The open-source auth library for Next.js — self-hosted
Overall score
82/100
Verdict
Good
Pricing
Free
Performance radar — NextAuth.js
Score breakdown
Developer UX
SDK quality, documentation, and quickstart speed.
Source: RadarTrek research
Security
MFA, passkeys, breach detection, and compliance certs.
Source: RadarTrek research
Free Tier
Generosity of free plan — MAU limit and features included.
Source: RadarTrek research
Feature Set
Social login, SSO, magic links, passwordless support, roles.
Source: RadarTrek research
Performance
Token validation latency and uptime SLA.
Source: RadarTrek research
Support
Documentation quality and paid support options.
Source: RadarTrek research
NextAuth.js (now Auth.js) is the most popular open-source auth solution for Next.js. Completely free and self-hosted. Supports 50+ OAuth providers. Requires your own database adapter.
In our independent evaluation across 6 scored dimensions, NextAuth.js earns an overall score of 82/100 — a strong result in the auth providers category. The platform is available including a permanently free tier, accessible to teams at any budget level. The score of 82 places it in the good tier of our auth providers rankings, where we assess tools on criteria that matter to builders: developer ux, security, free tier, and more.
NextAuth.js scores highest on Free Tier (100/100) and Feature Set (82/100), placing it among the stronger performers in those areas within the auth providers category. The dimensions with the most room for improvement are Support (70/100) and Security (78/100) — teams who weight these criteria most heavily should compare NextAuth.js carefully against alternatives before committing. The free entry point makes it easy to validate NextAuth.js before committing to a paid plan — a practical advantage when evaluating a new tool category. Our recommendation: NextAuth.js is worth a serious evaluation for teams that prioritise free tier — use the radar chart and dimension breakdown on this page to see at a glance whether its profile matches your priorities.
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Yes — NextAuth.js is free to use with no trial period or credit card required. It offers a permanently free tier, though paid plans with higher limits or additional features are typically available. Check the official pricing page for current plan details.
NextAuth.js scores highest on Free Tier in our independent assessment — 100/100, placing it among the stronger performers in this dimension within the auth providers category. Generosity of free plan — MAU limit and features included.. Teams who count free tier as a primary criterion should put NextAuth.js high on their evaluation list.
The lowest-scoring dimension for NextAuth.js in our testing is Support (70/100). This does not make it the wrong choice — if support is not a priority for your use case, the gap is irrelevant. But teams who weight support most heavily should compare NextAuth.js carefully against alternatives before committing, using the radar chart on this page to see the full profile at a glance.
NextAuth.js earns an overall RadarTrek score of 82/100 — a strong result in the auth providers category. Scores above 75 indicate a tool that performs well across most dimensions without a critical weakness. At 82/100, NextAuth.js is a reliable choice for most teams evaluating this space. Scores are reviewed when significant updates are released, so the number reflects the current version of the product.
The best alternative to NextAuth.js depends on which dimension matters most to you. Use the "Compare with" links in the sidebar to see a head-to-head radar chart against any specific competitor in the auth providers category. The main auth providers category page ranks all tools by overall score and lets you filter by dimension to find alternatives that lead on your priority criterion.
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