Auth.js

Auth.js is a complete authentication solution that works across different JavaScript frameworks. It provides everything needed to add secure login systems to websites and applications. You can let users sign in through their existing accounts on services like Google or GitHub, or you can use email-based magic links, or even traditional username and password combinations.

The library is runtime agnostic, meaning it adapts to work with Next.js, SvelteKit, Express, Qwik, and other frameworks. It handles session management, protects routes, and connects to databases when needed. Auth.js follows web standards and security best practices, making it both safe and reliable. Since it is open source, the code is publicly available for review and contributions from developers worldwide.

• OAuth 2.0 and OpenID Connect support

• 80+ pre-configured authentication providers

• Magic link email authentication

• Username and password credentials

• WebAuthn passwordless login

• Multiple framework support (Next.js, SvelteKit, Express)

• Database adapters for major databases

• JWT or database sessions

• Built-in security features

• Custom page support

• TypeScript ready

• Open source and free