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Auth.js (NextAuth)

Self-hosted auth library — free forever, you own the data.

Visit Auth.js (NextAuth)
Free tier

Free OSS — costs only what your DB and host cost

  • No managed service — you handle sessions, tokens, and DB schema.
  • Excellent for Next.js; works with most providers out of the box.

Last verified 2026-05 · free-tier numbers shift — confirm at the pricing page before relying on a quota for a launch decision.