
Auth.js
Free, open-source authentication library supporting multiple frameworks like Next.js, SvelteKit, Express, and Qwik with 50+ OAuth providers.

Auth.js is a comprehensive, free and open-source authentication solution designed for modern web applications. This powerful library provides seamless integration across multiple frameworks including Next.js, SvelteKit, Express, and Qwik.
Key Features:
- 50+ OAuth providers including GitHub, Google, Facebook, and more
- Framework-agnostic design with dedicated packages for popular frameworks
- Type-safe implementation with full TypeScript support
- Zero-config setup for quick implementation
- Secure by default with built-in CSRF protection and secure cookies
The library offers simple integration with just a few lines of code. Whether you're building a Next.js app, SvelteKit project, Express server, or Qwik application, Auth.js provides consistent APIs and excellent developer experience.
Benefits:
- Reduce development time with pre-built authentication flows
- Maintain security best practices without complexity
- Scale easily with enterprise-grade authentication
- Access comprehensive documentation and active community support
Perfect for developers who need reliable authentication without the overhead of building custom solutions from scratch.
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