# Better Auth
URL: https://wwadd.dev/tools/better-auth · Official site: https://better-auth.com/docs/introduction
Kind: TypeScript auth library · License: Open source · Last verified: 2026-10-05

A TypeScript authentication library with email/password, social sign-in, sessions, database adapters, and plugins for organizations, two-factor auth, and passkeys. In database-backed deployments, its auth tables live in the database you configure.

Reach for it when:
- TypeScript apps that need auth configuration and data integrated with their own backend
- Teams prepared to operate auth endpoints, migrations, email delivery, and updates

Worth knowing: The core library is MIT licensed; hosting and email still have operating costs. Plugins need configuration, and application data authorization remains your responsibility. This entry covers the library; managed services built on it have their own terms.

Repository: https://github.com/better-auth/better-auth
Recorded SPDX baseline: MIT