Better Auth

TypeScript auth libraryOpen source· verified Sep 2026

Framework-agnostic authentication for TypeScript: email and password, OAuth providers, sessions, and plugins for two-factor, passkeys, and organizations — stored in your own database.

Official site

Reach for it when

Auth you own instead of renting
Next.js, SvelteKit, and other TypeScript apps

Worth knowing

Since September 2025 the Better Auth team also maintains Auth.js (NextAuth), which is now in security-fix-only mode.

In stack playbooks

Next.js + Postgres + Prisma + Vercel

Sessions and OAuth providers

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